Finding the Fourth Proportional to 272.61, 408.58 and 157.14
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Solution
The fourth proportional to 272.61, 408.58 and 157.14 is: 235.52
Step by Step Solution
- Step 1: Write the proportion equation
272.61 : 408.58 = 157.14 : x - Step 2: Convert to fraction form
272.61/408.58 = 157.14/x - Step 3: Cross multiply
272.61x = 408.58 × 157.14 - Step 4: Simplify right side
272.61x = 64,203.87 - Step 5: Solve for x
x = 64,203.87/272.61 - Step 6: Final answer
x = 235.52
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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.