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Finding the Third Proportional to 169.59 and 255.66

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Solution

The third proportional to 169.59 and 255.66 is: 385.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.59 : 255.66 = 255.66 : x
  2. Step 2: Convert to fraction form
    169.59/255.66 = 255.66/x
  3. Step 3: Cross multiply
    169.59x = 255.66 × 255.66
  4. Step 4: Simplify right side
    169.59x = 65,360.12
  5. Step 5: Solve for x
    x = 65,360.12/169.59
  6. Step 6: Final answer
    x = 385.39

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.