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Finding the Fourth Proportional to 483.60, 724.17 and 239.49

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Solution

The fourth proportional to 483.60, 724.17 and 239.49 is: 358.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.60 : 724.17 = 239.49 : x
  2. Step 2: Convert to fraction form
    483.60/724.17 = 239.49/x
  3. Step 3: Cross multiply
    483.60x = 724.17 × 239.49
  4. Step 4: Simplify right side
    483.60x = 173,432.37
  5. Step 5: Solve for x
    x = 173,432.37/483.60
  6. Step 6: Final answer
    x = 358.62

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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.