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Finding the Fourth Proportional to 372.71, 514.57 and 239.99

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Solution

The fourth proportional to 372.71, 514.57 and 239.99 is: 331.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.71 : 514.57 = 239.99 : x
  2. Step 2: Convert to fraction form
    372.71/514.57 = 239.99/x
  3. Step 3: Cross multiply
    372.71x = 514.57 × 239.99
  4. Step 4: Simplify right side
    372.71x = 123,487.88
  5. Step 5: Solve for x
    x = 123,487.88/372.71
  6. Step 6: Final answer
    x = 331.33

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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.