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Finding the Third Proportional to 61.69 and 135.94

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Solution

The third proportional to 61.69 and 135.94 is: 299.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    61.69 : 135.94 = 135.94 : x
  2. Step 2: Convert to fraction form
    61.69/135.94 = 135.94/x
  3. Step 3: Cross multiply
    61.69x = 135.94 × 135.94
  4. Step 4: Simplify right side
    61.69x = 18,479.00
  5. Step 5: Solve for x
    x = 18,479.00/61.69
  6. Step 6: Final answer
    x = 299.56

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.