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Finding the Third Proportional to 8.50 and 10.88

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Solution

The third proportional to 8.50 and 10.88 is: 13.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8.50 : 10.88 = 10.88 : x
  2. Step 2: Convert to fraction form
    8.50/10.88 = 10.88/x
  3. Step 3: Cross multiply
    8.50x = 10.88 × 10.88
  4. Step 4: Simplify right side
    8.50x = 118.27
  5. Step 5: Solve for x
    x = 118.27/8.50
  6. Step 6: Final answer
    x = 13.91

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Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.