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Finding the Fourth Proportional to 1,101.87, 1,654.42 and 453.87

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Solution

The fourth proportional to 1,101.87, 1,654.42 and 453.87 is: 681.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,101.87 : 1,654.42 = 453.87 : x
  2. Step 2: Convert to fraction form
    1,101.87/1,654.42 = 453.87/x
  3. Step 3: Cross multiply
    1,101.87x = 1,654.42 × 453.87
  4. Step 4: Simplify right side
    1,101.87x = 750,882.20
  5. Step 5: Solve for x
    x = 750,882.20/1,101.87
  6. Step 6: Final answer
    x = 681.46

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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.