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Finding the Third Proportional to 200.88 and 357.38

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Solution

The third proportional to 200.88 and 357.38 is: 635.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.88 : 357.38 = 357.38 : x
  2. Step 2: Convert to fraction form
    200.88/357.38 = 357.38/x
  3. Step 3: Cross multiply
    200.88x = 357.38 × 357.38
  4. Step 4: Simplify right side
    200.88x = 127,716.89
  5. Step 5: Solve for x
    x = 127,716.89/200.88
  6. Step 6: Final answer
    x = 635.80

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Why These Related Problems?

These problems maintain the same ratio (1.78) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.