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Finding the Fourth Proportional to 272.74, 408.68 and 249.44

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Solution

The fourth proportional to 272.74, 408.68 and 249.44 is: 373.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    272.74 : 408.68 = 249.44 : x
  2. Step 2: Convert to fraction form
    272.74/408.68 = 249.44/x
  3. Step 3: Cross multiply
    272.74x = 408.68 × 249.44
  4. Step 4: Simplify right side
    272.74x = 101,941.14
  5. Step 5: Solve for x
    x = 101,941.14/272.74
  6. Step 6: Final answer
    x = 373.77

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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.