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Finding the Fourth Proportional to 532.97, 735.41 and 311.91

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Solution

The fourth proportional to 532.97, 735.41 and 311.91 is: 430.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    532.97 : 735.41 = 311.91 : x
  2. Step 2: Convert to fraction form
    532.97/735.41 = 311.91/x
  3. Step 3: Cross multiply
    532.97x = 735.41 × 311.91
  4. Step 4: Simplify right side
    532.97x = 229,380.17
  5. Step 5: Solve for x
    x = 229,380.17/532.97
  6. Step 6: Final answer
    x = 430.39

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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.