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Finding the Fourth Proportional to 731.42, 1,010.04 and 469.89

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Solution

The fourth proportional to 731.42, 1,010.04 and 469.89 is: 648.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    731.42 : 1,010.04 = 469.89 : x
  2. Step 2: Convert to fraction form
    731.42/1,010.04 = 469.89/x
  3. Step 3: Cross multiply
    731.42x = 1,010.04 × 469.89
  4. Step 4: Simplify right side
    731.42x = 474,607.70
  5. Step 5: Solve for x
    x = 474,607.70/731.42
  6. Step 6: Final answer
    x = 648.88

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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.