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Finding the Third Proportional to 339.35 and 717.13

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Solution

The third proportional to 339.35 and 717.13 is: 1,515.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.35 : 717.13 = 717.13 : x
  2. Step 2: Convert to fraction form
    339.35/717.13 = 717.13/x
  3. Step 3: Cross multiply
    339.35x = 717.13 × 717.13
  4. Step 4: Simplify right side
    339.35x = 514,282.27
  5. Step 5: Solve for x
    x = 514,282.27/339.35
  6. Step 6: Final answer
    x = 1,515.51

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.