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Finding the Third Proportional to 80.38 and 170.19

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Solution

The third proportional to 80.38 and 170.19 is: 360.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    80.38 : 170.19 = 170.19 : x
  2. Step 2: Convert to fraction form
    80.38/170.19 = 170.19/x
  3. Step 3: Cross multiply
    80.38x = 170.19 × 170.19
  4. Step 4: Simplify right side
    80.38x = 28,963.79
  5. Step 5: Solve for x
    x = 28,963.79/80.38
  6. Step 6: Final answer
    x = 360.36

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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.