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Finding the Third Proportional to 36.81 and 80.47

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Solution

The third proportional to 36.81 and 80.47 is: 175.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    36.81 : 80.47 = 80.47 : x
  2. Step 2: Convert to fraction form
    36.81/80.47 = 80.47/x
  3. Step 3: Cross multiply
    36.81x = 80.47 × 80.47
  4. Step 4: Simplify right side
    36.81x = 6,475.22
  5. Step 5: Solve for x
    x = 6,475.22/36.81
  6. Step 6: Final answer
    x = 175.90

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.