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Finding the Third Proportional to 79.31 and 163.69

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Solution

The third proportional to 79.31 and 163.69 is: 337.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    79.31 : 163.69 = 163.69 : x
  2. Step 2: Convert to fraction form
    79.31/163.69 = 163.69/x
  3. Step 3: Cross multiply
    79.31x = 163.69 × 163.69
  4. Step 4: Simplify right side
    79.31x = 26,793.60
  5. Step 5: Solve for x
    x = 26,793.60/79.31
  6. Step 6: Final answer
    x = 337.82

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Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.