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Finding the Fourth Proportional to 425.62, 587.32 and 239.11

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Solution

The fourth proportional to 425.62, 587.32 and 239.11 is: 329.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    425.62 : 587.32 = 239.11 : x
  2. Step 2: Convert to fraction form
    425.62/587.32 = 239.11/x
  3. Step 3: Cross multiply
    425.62x = 587.32 × 239.11
  4. Step 4: Simplify right side
    425.62x = 140,434.09
  5. Step 5: Solve for x
    x = 140,434.09/425.62
  6. Step 6: Final answer
    x = 329.95

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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.