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Finding the Third Proportional to 63.75 and 98.88

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Solution

The third proportional to 63.75 and 98.88 is: 153.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    63.75 : 98.88 = 98.88 : x
  2. Step 2: Convert to fraction form
    63.75/98.88 = 98.88/x
  3. Step 3: Cross multiply
    63.75x = 98.88 × 98.88
  4. Step 4: Simplify right side
    63.75x = 9,776.27
  5. Step 5: Solve for x
    x = 9,776.27/63.75
  6. Step 6: Final answer
    x = 153.35

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.