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Finding the Third Proportional to 7.13 and 7.88

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Solution

The third proportional to 7.13 and 7.88 is: 8.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7.13 : 7.88 = 7.88 : x
  2. Step 2: Convert to fraction form
    7.13/7.88 = 7.88/x
  3. Step 3: Cross multiply
    7.13x = 7.88 × 7.88
  4. Step 4: Simplify right side
    7.13x = 62.02
  5. Step 5: Solve for x
    x = 62.02/7.13
  6. Step 6: Final answer
    x = 8.70

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Why These Related Problems?

These problems maintain the same ratio (1.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.