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Finding the Third Proportional to 136.88 and 204.69

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Solution

The third proportional to 136.88 and 204.69 is: 306.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.88 : 204.69 = 204.69 : x
  2. Step 2: Convert to fraction form
    136.88/204.69 = 204.69/x
  3. Step 3: Cross multiply
    136.88x = 204.69 × 204.69
  4. Step 4: Simplify right side
    136.88x = 41,896.97
  5. Step 5: Solve for x
    x = 41,896.97/136.88
  6. Step 6: Final answer
    x = 306.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.