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Finding the Third Proportional to 68.38 and 92.75

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Solution

The third proportional to 68.38 and 92.75 is: 125.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    68.38 : 92.75 = 92.75 : x
  2. Step 2: Convert to fraction form
    68.38/92.75 = 92.75/x
  3. Step 3: Cross multiply
    68.38x = 92.75 × 92.75
  4. Step 4: Simplify right side
    68.38x = 8,602.56
  5. Step 5: Solve for x
    x = 8,602.56/68.38
  6. Step 6: Final answer
    x = 125.81

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.