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Finding the Third Proportional to 68.38 and 150.13

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Solution

The third proportional to 68.38 and 150.13 is: 329.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    68.38 : 150.13 = 150.13 : x
  2. Step 2: Convert to fraction form
    68.38/150.13 = 150.13/x
  3. Step 3: Cross multiply
    68.38x = 150.13 × 150.13
  4. Step 4: Simplify right side
    68.38x = 22,537.52
  5. Step 5: Solve for x
    x = 22,537.52/68.38
  6. Step 6: Final answer
    x = 329.62

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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.