1.

The third proportional to P and Q is 24, while the fourth proportional to P, Q and R is 48. Find the ratio of Q and R.1). 1 : 12). 1 : 23). 2 : 34). 1 : 3

Answer»

The third proportional to P and Q is 24.

⇒ P/Q = Q/24

⇒ Q2/P = 24

the FOURTH proportional to P, Q and R is 48.

⇒ P/Q = R/48

⇒ QR/P = 48

Dividing the two EQUATIONS, we get Q/R = 24/48 = 1 : 2



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