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Finding the Third Proportional to 171.28 and 276.33

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Solution

The third proportional to 171.28 and 276.33 is: 445.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.28 : 276.33 = 276.33 : x
  2. Step 2: Convert to fraction form
    171.28/276.33 = 276.33/x
  3. Step 3: Cross multiply
    171.28x = 276.33 × 276.33
  4. Step 4: Simplify right side
    171.28x = 76,357.23
  5. Step 5: Solve for x
    x = 76,357.23/171.28
  6. Step 6: Final answer
    x = 445.80

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.