Finding the Fourth Proportional to 168.68, 252.99 and 87.41
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Solution
The fourth proportional to 168.68, 252.99 and 87.41 is: 131.10
Step by Step Solution
- Step 1: Write the proportion equation
168.68 : 252.99 = 87.41 : x - Step 2: Convert to fraction form
168.68/252.99 = 87.41/x - Step 3: Cross multiply
168.68x = 252.99 × 87.41 - Step 4: Simplify right side
168.68x = 22,114.49 - Step 5: Solve for x
x = 22,114.49/168.68 - Step 6: Final answer
x = 131.10
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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.