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Finding the Third Proportional to 9.50 and 13.19

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Solution

The third proportional to 9.50 and 13.19 is: 18.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    9.50 : 13.19 = 13.19 : x
  2. Step 2: Convert to fraction form
    9.50/13.19 = 13.19/x
  3. Step 3: Cross multiply
    9.50x = 13.19 × 13.19
  4. Step 4: Simplify right side
    9.50x = 173.91
  5. Step 5: Solve for x
    x = 173.91/9.50
  6. Step 6: Final answer
    x = 18.31

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.