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Finding the Fourth Proportional to 542.45, 743.70 and 532.61

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Solution

The fourth proportional to 542.45, 743.70 and 532.61 is: 730.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.45 : 743.70 = 532.61 : x
  2. Step 2: Convert to fraction form
    542.45/743.70 = 532.61/x
  3. Step 3: Cross multiply
    542.45x = 743.70 × 532.61
  4. Step 4: Simplify right side
    542.45x = 396,103.12
  5. Step 5: Solve for x
    x = 396,103.12/542.45
  6. Step 6: Final answer
    x = 730.21

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.