‹
✏️
Ratio & Proportion
· Examples✏️ Worked Examples — Step by Step
E1
EasyDivide ₹1200 in the ratio 2 : 3.
💡 Sum of ratio parts is the divisor.
👁 Show Solution
Total parts = 2 + 3 = 5 First share = (2/5) × 1200 = ₹480 Second share = (3/5) × 1200 = ₹720 ✅ Answer: ₹480 and ₹720
✅₹480 and ₹720
E2
MediumIf a : b = 2 : 5 and b : c = 3 : 4, find a : c.
💡 Multiply (a/b) × (b/c) to chain ratios.
👁 Show Solution
a/b = 2/5, b/c = 3/4 a/c = (a/b) × (b/c) = (2/5) × (3/4) = 6/20 = 3/10 ✅ Answer: 3 : 10
✅6 : 20 = 3 : 10
E3
ChallengingThe mean proportional between 9 and 25 is:
💡 Mean proportional = √(a × c).
👁 Show Solution
Mean proportional = √(9 × 25) = √225 = 15 ✅ Answer: 15
✅15