Used for the numerical relationship between quantities or parts of a whole. Often corresponds to English 'ratio,' 'proportion,' or 'percentage' depending on context.
In this class, the ratio of boys to girls is almost the same.
The proportion of advertising costs in sales is high.
The ratio of men to women at this company is fifty-fifty.
The proportion of foreign tourists is increasing every year.
Please mix water and detergent at a ratio of 3 to 1.
Young people make up about thirty percent of the total.
ratio of direct to indirect taxes
debt ratio