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Finding the Third Proportional to 6.46 and 11.47

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Solution

The third proportional to 6.46 and 11.47 is: 20.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    6.46 : 11.47 = 11.47 : x
  2. Step 2: Convert to fraction form
    6.46/11.47 = 11.47/x
  3. Step 3: Cross multiply
    6.46x = 11.47 × 11.47
  4. Step 4: Simplify right side
    6.46x = 131.55
  5. Step 5: Solve for x
    x = 131.55/6.46
  6. Step 6: Final answer
    x = 20.35

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Why These Related Problems?

These problems maintain the same ratio (1.77) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.