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Finding the Third Proportional to 5.38 and 7.19

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Solution

The third proportional to 5.38 and 7.19 is: 9.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5.38 : 7.19 = 7.19 : x
  2. Step 2: Convert to fraction form
    5.38/7.19 = 7.19/x
  3. Step 3: Cross multiply
    5.38x = 7.19 × 7.19
  4. Step 4: Simplify right side
    5.38x = 51.66
  5. Step 5: Solve for x
    x = 51.66/5.38
  6. Step 6: Final answer
    x = 9.61

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.