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Finding the Third Proportional to 171.56 and 361.97

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Solution

The third proportional to 171.56 and 361.97 is: 763.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.56 : 361.97 = 361.97 : x
  2. Step 2: Convert to fraction form
    171.56/361.97 = 361.97/x
  3. Step 3: Cross multiply
    171.56x = 361.97 × 361.97
  4. Step 4: Simplify right side
    171.56x = 131,021.38
  5. Step 5: Solve for x
    x = 131,021.38/171.56
  6. Step 6: Final answer
    x = 763.69

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.