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Finding the Fourth Proportional to 1,609.14, 2,414.01 and 731.70

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Solution

The fourth proportional to 1,609.14, 2,414.01 and 731.70 is: 1,097.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,609.14 : 2,414.01 = 731.70 : x
  2. Step 2: Convert to fraction form
    1,609.14/2,414.01 = 731.70/x
  3. Step 3: Cross multiply
    1,609.14x = 2,414.01 × 731.70
  4. Step 4: Simplify right side
    1,609.14x = 1,766,331.12
  5. Step 5: Solve for x
    x = 1,766,331.12/1,609.14
  6. Step 6: Final answer
    x = 1,097.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.