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Finding the Third Proportional to 63.75 and 125.69

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Solution

The third proportional to 63.75 and 125.69 is: 247.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    63.75 : 125.69 = 125.69 : x
  2. Step 2: Convert to fraction form
    63.75/125.69 = 125.69/x
  3. Step 3: Cross multiply
    63.75x = 125.69 × 125.69
  4. Step 4: Simplify right side
    63.75x = 15,797.35
  5. Step 5: Solve for x
    x = 15,797.35/63.75
  6. Step 6: Final answer
    x = 247.80

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Why These Related Problems?

These problems maintain the same ratio (1.97) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.