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Finding the Third Proportional to 63.36 and 136.61

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Solution

The third proportional to 63.36 and 136.61 is: 294.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    63.36 : 136.61 = 136.61 : x
  2. Step 2: Convert to fraction form
    63.36/136.61 = 136.61/x
  3. Step 3: Cross multiply
    63.36x = 136.61 × 136.61
  4. Step 4: Simplify right side
    63.36x = 18,661.85
  5. Step 5: Solve for x
    x = 18,661.85/63.36
  6. Step 6: Final answer
    x = 294.54

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.