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Finding the Third Proportional to 3.30 and 7.13

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Solution

The third proportional to 3.30 and 7.13 is: 15.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3.30 : 7.13 = 7.13 : x
  2. Step 2: Convert to fraction form
    3.30/7.13 = 7.13/x
  3. Step 3: Cross multiply
    3.30x = 7.13 × 7.13
  4. Step 4: Simplify right side
    3.30x = 50.86
  5. Step 5: Solve for x
    x = 50.86/3.30
  6. Step 6: Final answer
    x = 15.39

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.