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Finding the Third Proportional to 251 and 353

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Solution

The third proportional to 251 and 353 is: 496.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    251 : 353 = 353 : x
  2. Step 2: Convert to fraction form
    251/353 = 353/x
  3. Step 3: Cross multiply
    251x = 353 × 353
  4. Step 4: Simplify right side
    251x = 124,609
  5. Step 5: Solve for x
    x = 124,609/251
  6. Step 6: Final answer
    x = 496.45

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.