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Finding the Fourth Proportional to 1,073.38, 1,610.53 and 457.22

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Solution

The fourth proportional to 1,073.38, 1,610.53 and 457.22 is: 686.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,073.38 : 1,610.53 = 457.22 : x
  2. Step 2: Convert to fraction form
    1,073.38/1,610.53 = 457.22/x
  3. Step 3: Cross multiply
    1,073.38x = 1,610.53 × 457.22
  4. Step 4: Simplify right side
    1,073.38x = 736,366.53
  5. Step 5: Solve for x
    x = 736,366.53/1,073.38
  6. Step 6: Final answer
    x = 686.03

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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.