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Finding the Third Proportional to 6.56 and 10.19

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Solution

The third proportional to 6.56 and 10.19 is: 15.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6.56 : 10.19 = 10.19 : x
  2. Step 2: Convert to fraction form
    6.56/10.19 = 10.19/x
  3. Step 3: Cross multiply
    6.56x = 10.19 × 10.19
  4. Step 4: Simplify right side
    6.56x = 103.79
  5. Step 5: Solve for x
    x = 103.79/6.56
  6. Step 6: Final answer
    x = 15.81

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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.