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Finding the Third Proportional to 255.75 and 338.44

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Solution

The third proportional to 255.75 and 338.44 is: 447.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.75 : 338.44 = 338.44 : x
  2. Step 2: Convert to fraction form
    255.75/338.44 = 338.44/x
  3. Step 3: Cross multiply
    255.75x = 338.44 × 338.44
  4. Step 4: Simplify right side
    255.75x = 114,539.94
  5. Step 5: Solve for x
    x = 114,539.94/255.75
  6. Step 6: Final answer
    x = 447.86

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.