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Finding the Third Proportional to 61.88 and 135.28

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Solution

The third proportional to 61.88 and 135.28 is: 295.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    61.88 : 135.28 = 135.28 : x
  2. Step 2: Convert to fraction form
    61.88/135.28 = 135.28/x
  3. Step 3: Cross multiply
    61.88x = 135.28 × 135.28
  4. Step 4: Simplify right side
    61.88x = 18,301.02
  5. Step 5: Solve for x
    x = 18,301.02/61.88
  6. Step 6: Final answer
    x = 295.77

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.