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Finding the Fourth Proportional to 483.43, 724.02 and 239.17

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Solution

The fourth proportional to 483.43, 724.02 and 239.17 is: 358.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.43 : 724.02 = 239.17 : x
  2. Step 2: Convert to fraction form
    483.43/724.02 = 239.17/x
  3. Step 3: Cross multiply
    483.43x = 724.02 × 239.17
  4. Step 4: Simplify right side
    483.43x = 173,163.86
  5. Step 5: Solve for x
    x = 173,163.86/483.43
  6. Step 6: Final answer
    x = 358.20

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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.