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Finding the Third Proportional to 269.81 and 352.78

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Solution

The third proportional to 269.81 and 352.78 is: 461.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.81 : 352.78 = 352.78 : x
  2. Step 2: Convert to fraction form
    269.81/352.78 = 352.78/x
  3. Step 3: Cross multiply
    269.81x = 352.78 × 352.78
  4. Step 4: Simplify right side
    269.81x = 124,454.61
  5. Step 5: Solve for x
    x = 124,454.61/269.81
  6. Step 6: Final answer
    x = 461.26

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.