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Finding the Third Proportional to 724.59 and 1,090.22

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Solution

The third proportional to 724.59 and 1,090.22 is: 1,640.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    724.59 : 1,090.22 = 1,090.22 : x
  2. Step 2: Convert to fraction form
    724.59/1,090.22 = 1,090.22/x
  3. Step 3: Cross multiply
    724.59x = 1,090.22 × 1,090.22
  4. Step 4: Simplify right side
    724.59x = 1,188,576.92
  5. Step 5: Solve for x
    x = 1,188,576.92/724.59
  6. Step 6: Final answer
    x = 1,640.34

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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.