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Finding the Third Proportional to 18.09 and 37.22

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Solution

The third proportional to 18.09 and 37.22 is: 76.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18.09 : 37.22 = 37.22 : x
  2. Step 2: Convert to fraction form
    18.09/37.22 = 37.22/x
  3. Step 3: Cross multiply
    18.09x = 37.22 × 37.22
  4. Step 4: Simplify right side
    18.09x = 1,385.24
  5. Step 5: Solve for x
    x = 1,385.24/18.09
  6. Step 6: Final answer
    x = 76.56

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Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.