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Finding the Fourth Proportional to 271.75, 404.82 and 254.94

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Solution

The fourth proportional to 271.75, 404.82 and 254.94 is: 379.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    271.75 : 404.82 = 254.94 : x
  2. Step 2: Convert to fraction form
    271.75/404.82 = 254.94/x
  3. Step 3: Cross multiply
    271.75x = 404.82 × 254.94
  4. Step 4: Simplify right side
    271.75x = 103,205.57
  5. Step 5: Solve for x
    x = 103,205.57/271.75
  6. Step 6: Final answer
    x = 379.78

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.