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Finding the Third Proportional to 82.92 and 115.03

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Solution

The third proportional to 82.92 and 115.03 is: 159.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    82.92 : 115.03 = 115.03 : x
  2. Step 2: Convert to fraction form
    82.92/115.03 = 115.03/x
  3. Step 3: Cross multiply
    82.92x = 115.03 × 115.03
  4. Step 4: Simplify right side
    82.92x = 13,232.19
  5. Step 5: Solve for x
    x = 13,232.19/82.92
  6. Step 6: Final answer
    x = 159.57

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.