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Finding the Fourth Proportional to 271.43, 406.87 and 194.88

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Solution

The fourth proportional to 271.43, 406.87 and 194.88 is: 292.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    271.43 : 406.87 = 194.88 : x
  2. Step 2: Convert to fraction form
    271.43/406.87 = 194.88/x
  3. Step 3: Cross multiply
    271.43x = 406.87 × 194.88
  4. Step 4: Simplify right side
    271.43x = 79,290.83
  5. Step 5: Solve for x
    x = 79,290.83/271.43
  6. Step 6: Final answer
    x = 292.12

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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.