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Finding the Third Proportional to 38.14 and 80.79

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Solution

The third proportional to 38.14 and 80.79 is: 171.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    38.14 : 80.79 = 80.79 : x
  2. Step 2: Convert to fraction form
    38.14/80.79 = 80.79/x
  3. Step 3: Cross multiply
    38.14x = 80.79 × 80.79
  4. Step 4: Simplify right side
    38.14x = 6,527.21
  5. Step 5: Solve for x
    x = 6,527.21/38.14
  6. Step 6: Final answer
    x = 171.12

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.