Answer
A ratio is a single comparison, while a proportion is a statement that two ratios are equal.
Work Step by Step
As an example a ratio could be $\frac{1}{3}$ while a proportion would be written $\frac{1}{3}$ = $\frac{3}{9}$
Geometry: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281159
ISBN 13:
978-0-13328-115-6
Chapter 7 - Similarity - 7-1 Ratios and Proportions - Got It? - Page 435: 5
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