Finding the Fourth Proportional to 168, 252 and 71.82
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Solution
The fourth proportional to 168, 252 and 71.82 is: 107.73
Step by Step Solution
- Step 1: Write the proportion equation
168 : 252 = 71.82 : x - Step 2: Convert to fraction form
168/252 = 71.82/x - Step 3: Cross multiply
168x = 252 × 71.82 - Step 4: Simplify right side
168x = 18,098.64 - Step 5: Solve for x
x = 18,098.64/168 - Step 6: Final answer
x = 107.73
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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.