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Finding the Third Proportional to 166.78 and 337.97

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Solution

The third proportional to 166.78 and 337.97 is: 684.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.78 : 337.97 = 337.97 : x
  2. Step 2: Convert to fraction form
    166.78/337.97 = 337.97/x
  3. Step 3: Cross multiply
    166.78x = 337.97 × 337.97
  4. Step 4: Simplify right side
    166.78x = 114,222.88
  5. Step 5: Solve for x
    x = 114,222.88/166.78
  6. Step 6: Final answer
    x = 684.87

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.