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Finding the Fourth Proportional to 529.96, 731.37 and 320.17

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Solution

The fourth proportional to 529.96, 731.37 and 320.17 is: 441.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.96 : 731.37 = 320.17 : x
  2. Step 2: Convert to fraction form
    529.96/731.37 = 320.17/x
  3. Step 3: Cross multiply
    529.96x = 731.37 × 320.17
  4. Step 4: Simplify right side
    529.96x = 234,162.73
  5. Step 5: Solve for x
    x = 234,162.73/529.96
  6. Step 6: Final answer
    x = 441.85

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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.