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Finding the Fourth Proportional to 1,349.69, 2,024.85 and 691.29

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Solution

The fourth proportional to 1,349.69, 2,024.85 and 691.29 is: 1,037.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,349.69 : 2,024.85 = 691.29 : x
  2. Step 2: Convert to fraction form
    1,349.69/2,024.85 = 691.29/x
  3. Step 3: Cross multiply
    1,349.69x = 2,024.85 × 691.29
  4. Step 4: Simplify right side
    1,349.69x = 1,399,758.56
  5. Step 5: Solve for x
    x = 1,399,758.56/1,349.69
  6. Step 6: Final answer
    x = 1,037.10

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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.