Ratio:
Ratio is the relationship between the two numbers which are of the same kind and can be expressed as “a to b or a: b”.
Proportion:
Proportion is the equality of two given ratios.
Differences:
| Basis | Ratio | Proportion |
|---|---|---|
| Definition (www.oxforddictionaries.com) | The quantitative relation between two amounts showing the number of times one value contains or is contained within another. | A part, share or number considered in comparative relation to a whole. |
| Synonyms | Scale, rate, proportion and quota | Volume, fraction, portion, rate and magnitude |
| Antonyms | Whole and difference | Whole and entirety |
| Pronunciation |
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| History | It is impossible to trace the origin of the concept of ratio, because the ideas from which it developed would have been familiar to preliterate cultures. | |
| Word origin | The word ratio was originated in 1660 from Latin computation and reason. | The word proportion was originated in the 14th century from Middle English proporcion. |
| Written | Ratio is generally only an expression. | A proportion can be written as an algebraic equation. |
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