Finding the Fourth Proportional to 169.12, 253.68 and 112
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Solution
The fourth proportional to 169.12, 253.68 and 112 is: 168
Step by Step Solution
- Step 1: Write the proportion equation
169.12 : 253.68 = 112 : x - Step 2: Convert to fraction form
169.12/253.68 = 112/x - Step 3: Cross multiply
169.12x = 253.68 × 112 - Step 4: Simplify right side
169.12x = 28,412.16 - Step 5: Solve for x
x = 28,412.16/169.12 - Step 6: Final answer
x = 168
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.