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Finding the Third Proportional to 171.84 and 356.98

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Solution

The third proportional to 171.84 and 356.98 is: 741.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.84 : 356.98 = 356.98 : x
  2. Step 2: Convert to fraction form
    171.84/356.98 = 356.98/x
  3. Step 3: Cross multiply
    171.84x = 356.98 × 356.98
  4. Step 4: Simplify right side
    171.84x = 127,432.27
  5. Step 5: Solve for x
    x = 127,432.27/171.84
  6. Step 6: Final answer
    x = 741.56

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.