# proportional

[pruh-pawr-shuh-nl, -pohr-]

- having due proportion; corresponding.
- being in or characterized by proportion.
- of, relating to, or based on proportion; relative.
- Mathematics.
- (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.
- (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.

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## Origin of proportional^{}

## Synonyms

Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

## proportional

- of, involving, or being in proportion
- maths having or related by a constant ratio

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- maths an unknown term in a proportionin a/b = c/x, x is the fourth proportional

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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

## Word Origin and History for unproportional

## proportional

### adj.

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

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Online Etymology Dictionary, © 2010 Douglas Harper