In duplicate ratios, when the ratio p/q is compounded with itself, the resulting ratio which is p²/q² is called as the duplicate ratio. For example, 16/9 is the duplicate ratio of 4/3. The duplicate ratio of the ratio of a:b is also defined as the compound ratio of a:b and a:b.

What is the duplicate ratio of 2 3?

= 4 : 9.

What does same ratio mean?

To find an equal ratio, you can either multiply or divide each term in the ratio by the same number (but not zero). For example, if we divide both terms in the ratio 3:6 by the number three, then we get the equal ratio, 1:2.