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Finding the Fourth Proportional to 414.58, 572.07 and 239.89

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Solution

The fourth proportional to 414.58, 572.07 and 239.89 is: 331.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    414.58 : 572.07 = 239.89 : x
  2. Step 2: Convert to fraction form
    414.58/572.07 = 239.89/x
  3. Step 3: Cross multiply
    414.58x = 572.07 × 239.89
  4. Step 4: Simplify right side
    414.58x = 137,233.87
  5. Step 5: Solve for x
    x = 137,233.87/414.58
  6. Step 6: Final answer
    x = 331.02

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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.