The meaning of ratio is the division of two numbers, which is also called the ratio of two numbers, while the meaning of proportion is the expression that two ratios are equal.

The ratio is the division of two numbers, and there are two items; Proportion is an equation, which means that two proportions are equal and there are four terms. So the meanings of ratio and proportion are different. Moreover, the comparison symbol does not have the meaning of brackets, while in another form, the score has the meaning of brackets.

The comparison symbol is the division symbol in division and the dividing line in fraction.