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Finding the Third Proportional to 42.25 and 92.75

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Solution

The third proportional to 42.25 and 92.75 is: 203.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    42.25 : 92.75 = 92.75 : x
  2. Step 2: Convert to fraction form
    42.25/92.75 = 92.75/x
  3. Step 3: Cross multiply
    42.25x = 92.75 × 92.75
  4. Step 4: Simplify right side
    42.25x = 8,602.56
  5. Step 5: Solve for x
    x = 8,602.56/42.25
  6. Step 6: Final answer
    x = 203.61

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.