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Finding the Third Proportional to 17.31 and 43.75

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Solution

The third proportional to 17.31 and 43.75 is: 110.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    17.31 : 43.75 = 43.75 : x
  2. Step 2: Convert to fraction form
    17.31/43.75 = 43.75/x
  3. Step 3: Cross multiply
    17.31x = 43.75 × 43.75
  4. Step 4: Simplify right side
    17.31x = 1,914.06
  5. Step 5: Solve for x
    x = 1,914.06/17.31
  6. Step 6: Final answer
    x = 110.56

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Why These Related Problems?

These problems maintain the same ratio (2.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.