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Finding the Third Proportional to 18.50 and 26.75

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Solution

The third proportional to 18.50 and 26.75 is: 38.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18.50 : 26.75 = 26.75 : x
  2. Step 2: Convert to fraction form
    18.50/26.75 = 26.75/x
  3. Step 3: Cross multiply
    18.50x = 26.75 × 26.75
  4. Step 4: Simplify right side
    18.50x = 715.56
  5. Step 5: Solve for x
    x = 715.56/18.50
  6. Step 6: Final answer
    x = 38.68

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.