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Finding the Third Proportional to 18.15 and 37.49

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Solution

The third proportional to 18.15 and 37.49 is: 77.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18.15 : 37.49 = 37.49 : x
  2. Step 2: Convert to fraction form
    18.15/37.49 = 37.49/x
  3. Step 3: Cross multiply
    18.15x = 37.49 × 37.49
  4. Step 4: Simplify right side
    18.15x = 1,405.81
  5. Step 5: Solve for x
    x = 1,405.81/18.15
  6. Step 6: Final answer
    x = 77.44

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.