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Finding the Third Proportional to 263.44 and 343.78

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Solution

The third proportional to 263.44 and 343.78 is: 448.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.44 : 343.78 = 343.78 : x
  2. Step 2: Convert to fraction form
    263.44/343.78 = 343.78/x
  3. Step 3: Cross multiply
    263.44x = 343.78 × 343.78
  4. Step 4: Simplify right side
    263.44x = 118,185.55
  5. Step 5: Solve for x
    x = 118,185.55/263.44
  6. Step 6: Final answer
    x = 448.63

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.