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Finding the Fourth Proportional to 731.67, 1,010.39 and 470.14

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Solution

The fourth proportional to 731.67, 1,010.39 and 470.14 is: 649.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    731.67 : 1,010.39 = 470.14 : x
  2. Step 2: Convert to fraction form
    731.67/1,010.39 = 470.14/x
  3. Step 3: Cross multiply
    731.67x = 1,010.39 × 470.14
  4. Step 4: Simplify right side
    731.67x = 475,024.75
  5. Step 5: Solve for x
    x = 475,024.75/731.67
  6. Step 6: Final answer
    x = 649.23

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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.