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Finding the Third Proportional to 151.31 and 355.41

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Solution

The third proportional to 151.31 and 355.41 is: 834.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.31 : 355.41 = 355.41 : x
  2. Step 2: Convert to fraction form
    151.31/355.41 = 355.41/x
  3. Step 3: Cross multiply
    151.31x = 355.41 × 355.41
  4. Step 4: Simplify right side
    151.31x = 126,313.60
  5. Step 5: Solve for x
    x = 126,313.60/151.31
  6. Step 6: Final answer
    x = 834.79

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Why These Related Problems?

These problems maintain the same ratio (2.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.