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Finding the Third Proportional to 784.31 and 1,174.13

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Solution

The third proportional to 784.31 and 1,174.13 is: 1,757.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    784.31 : 1,174.13 = 1,174.13 : x
  2. Step 2: Convert to fraction form
    784.31/1,174.13 = 1,174.13/x
  3. Step 3: Cross multiply
    784.31x = 1,174.13 × 1,174.13
  4. Step 4: Simplify right side
    784.31x = 1,378,569.52
  5. Step 5: Solve for x
    x = 1,378,569.52/784.31
  6. Step 6: Final answer
    x = 1,757.68

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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.