Finding the Fourth Proportional to 372.92, 515.08 and 306.68
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Solution
The fourth proportional to 372.92, 515.08 and 306.68 is: 423.59
Step by Step Solution
- Step 1: Write the proportion equation
372.92 : 515.08 = 306.68 : x - Step 2: Convert to fraction form
372.92/515.08 = 306.68/x - Step 3: Cross multiply
372.92x = 515.08 × 306.68 - Step 4: Simplify right side
372.92x = 157,964.73 - Step 5: Solve for x
x = 157,964.73/372.92 - Step 6: Final answer
x = 423.59
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.