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Finding the Fourth Proportional to 271.86, 408.06 and 247.56

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Solution

The fourth proportional to 271.86, 408.06 and 247.56 is: 371.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    271.86 : 408.06 = 247.56 : x
  2. Step 2: Convert to fraction form
    271.86/408.06 = 247.56/x
  3. Step 3: Cross multiply
    271.86x = 408.06 × 247.56
  4. Step 4: Simplify right side
    271.86x = 101,019.33
  5. Step 5: Solve for x
    x = 101,019.33/271.86
  6. Step 6: Final answer
    x = 371.59

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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.