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Finding the Third Proportional to 263.75 and 400.69

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Solution

The third proportional to 263.75 and 400.69 is: 608.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.75 : 400.69 = 400.69 : x
  2. Step 2: Convert to fraction form
    263.75/400.69 = 400.69/x
  3. Step 3: Cross multiply
    263.75x = 400.69 × 400.69
  4. Step 4: Simplify right side
    263.75x = 160,550.47
  5. Step 5: Solve for x
    x = 160,550.47/263.75
  6. Step 6: Final answer
    x = 608.72

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.