# proportional

[ pruh-pawr-shuh-nl ]
See synonyms for proportional on Thesaurus.com
1. having due proportion; corresponding.

2. being in or characterized by proportion.

1. of, relating to, or based on proportion; relative.

2. 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.

## Origin of proportional

1
First recorded in 1350–1400; Middle English proporcional, from Latin prōportiōnālis; see proportion, -al1

## Other words from proportional

• pro·por·tion·al·i·ty [pruh-pawr-shuh-nal-i-tee], /prəˌpɔr ʃəˈnæl ɪ ti/, noun

## Words that may be confused with proportional

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

## How to use proportional in a sentence

• They have not unproportionally large, but often only regular cells.

British Pomology | Robert Hogg

## British Dictionary definitions for proportional

proportional

/ (prəˈpɔːʃənəl) /

1. of, involving, or being in proportion

2. maths having or related by a constant ratio

noun
1. maths an unknown term in a proportion: in a/b = c/x, x is the fourth proportional

## Derived forms of proportional

• proportionality, noun