Finding the Fourth Proportional to 168.62, 252.99 and 87.44
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Solution
The fourth proportional to 168.62, 252.99 and 87.44 is: 131.19
Step by Step Solution
- Step 1: Write the proportion equation
168.62 : 252.99 = 87.44 : x - Step 2: Convert to fraction form
168.62/252.99 = 87.44/x - Step 3: Cross multiply
168.62x = 252.99 × 87.44 - Step 4: Simplify right side
168.62x = 22,120.18 - Step 5: Solve for x
x = 22,120.18/168.62 - Step 6: Final answer
x = 131.19
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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.