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Finding the Third Proportional to 17.75 and 27.88

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Solution

The third proportional to 17.75 and 27.88 is: 43.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    17.75 : 27.88 = 27.88 : x
  2. Step 2: Convert to fraction form
    17.75/27.88 = 27.88/x
  3. Step 3: Cross multiply
    17.75x = 27.88 × 27.88
  4. Step 4: Simplify right side
    17.75x = 777.02
  5. Step 5: Solve for x
    x = 777.02/17.75
  6. Step 6: Final answer
    x = 43.78

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.