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Finding the Third Proportional to 717.19 and 1,542.38

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Solution

The third proportional to 717.19 and 1,542.38 is: 3,317.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    717.19 : 1,542.38 = 1,542.38 : x
  2. Step 2: Convert to fraction form
    717.19/1,542.38 = 1,542.38/x
  3. Step 3: Cross multiply
    717.19x = 1,542.38 × 1,542.38
  4. Step 4: Simplify right side
    717.19x = 2,378,920.64
  5. Step 5: Solve for x
    x = 2,378,920.64/717.19
  6. Step 6: Final answer
    x = 3,317.01

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.