Divide ₹1200 in the ratio 2 : 3.

💡 Sum of ratio parts is the divisor.

If a : b = 2 : 5 and b : c = 3 : 4, find a : c.

💡 Multiply (a/b) × (b/c) to chain ratios.

The mean proportional between 9 and 25 is:

💡 Mean proportional = √(a × c).