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Finding the Third Proportional to 269.88 and 455.75

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Solution

The third proportional to 269.88 and 455.75 is: 769.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.88 : 455.75 = 455.75 : x
  2. Step 2: Convert to fraction form
    269.88/455.75 = 455.75/x
  3. Step 3: Cross multiply
    269.88x = 455.75 × 455.75
  4. Step 4: Simplify right side
    269.88x = 207,708.06
  5. Step 5: Solve for x
    x = 207,708.06/269.88
  6. Step 6: Final answer
    x = 769.65

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Why These Related Problems?

These problems maintain the same ratio (1.69) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.