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Finding the Third Proportional to 8.88 and 13.79

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Solution

The third proportional to 8.88 and 13.79 is: 21.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8.88 : 13.79 = 13.79 : x
  2. Step 2: Convert to fraction form
    8.88/13.79 = 13.79/x
  3. Step 3: Cross multiply
    8.88x = 13.79 × 13.79
  4. Step 4: Simplify right side
    8.88x = 190.23
  5. Step 5: Solve for x
    x = 190.23/8.88
  6. Step 6: Final answer
    x = 21.43

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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.