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# proportional

[pruh-pawr-shuh-nl, -pohr-] /prəˈpɔr ʃə nl, -ˈpoʊr-/
1.
having due proportion; corresponding.
2.
being in or characterized by proportion.
3.
of, relating to, or based on proportion; relative.
4.
Mathematics.
1. (of two quantities) having the same or a constant ratio or relation:
The quantities y and x are proportional if y/x = k, where k is the constant of proportionality.
2. (of a first quantity with respect to a second quantity) a constant multiple of:
The quantity y is proportional to x if y = kx, where k is the constant of proportionality.
Origin
1350-1400
1350-1400; Middle English proporcional < Latin prōportiōnālis. See proportion, -al1
Related forms
proportionality, noun
Can be confused
proportional, proportionate.
Synonyms
1. harmonious, comparative, accordant, consonant, proportionate.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for inter-proportional

## proportional

/prəˈpɔːʃənəl/
1.
of, involving, or being in proportion
2.
(maths) having or related by a constant ratio
noun
3.
(maths) an unknown term in a proportion: in a/b = c/x, x is the fourth proportional
Derived Forms
proportionality, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Word Origin and History for inter-proportional

## proportional

late 14c. (implied in proportionally), from Late Latin proportionalis "pertaining to proportions," from proportio (see proportion). Related: Proportionally.

Online Etymology Dictionary, © 2010 Douglas Harper
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### Difficulty index for proportional

Few English speakers likely know this word

### Word Value for inter

5
6
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