# proportionality

## proportional

[pruh-pawr-shuh-nl, -pohr-]
1.
having due proportion; corresponding.
2.
being in or characterized by proportion.
3.
of, pertaining to, or based on proportion; relative.
4.
Mathematics.
a.
(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.
b.
(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; Middle English proporcional < Latin prōportiōnālis. See proportion, -al1

proportionality, noun

proportional, proportionate.

1. harmonious, comparative, accordant, consonant, proportionate.
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World English Dictionary
 proportional (prəˈpɔːʃənəl) —adj 1. of, involving, or being in proportion 2. maths having or related by a constant ratio —n 3. maths an unknown term in a proportion: in a/b = c/x, x is the fourth proportional proportion'ality —n pro'portionally —adv

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Example sentences
As previous commentators have said, it's all about proportionality.
Proportionality arguments are always strongly overstated.
But familiar as it is, proportionality is a slippery idea.
But governments have a duty to acquire as much information as they can
consistent with that proportionality.