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Finding the Third Proportional to 61.69 and 142.97

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Solution

The third proportional to 61.69 and 142.97 is: 331.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    61.69 : 142.97 = 142.97 : x
  2. Step 2: Convert to fraction form
    61.69/142.97 = 142.97/x
  3. Step 3: Cross multiply
    61.69x = 142.97 × 142.97
  4. Step 4: Simplify right side
    61.69x = 20,440.06
  5. Step 5: Solve for x
    x = 20,440.06/61.69
  6. Step 6: Final answer
    x = 331.35

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Why These Related Problems?

These problems maintain the same ratio (2.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.