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Finding the Fourth Proportional to 272.88, 408.51 and 200.25

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Solution

The fourth proportional to 272.88, 408.51 and 200.25 is: 299.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    272.88 : 408.51 = 200.25 : x
  2. Step 2: Convert to fraction form
    272.88/408.51 = 200.25/x
  3. Step 3: Cross multiply
    272.88x = 408.51 × 200.25
  4. Step 4: Simplify right side
    272.88x = 81,804.13
  5. Step 5: Solve for x
    x = 81,804.13/272.88
  6. Step 6: Final answer
    x = 299.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.