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Finding the Fourth Proportional to 271.22, 406.92 and 219.98

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Solution

The fourth proportional to 271.22, 406.92 and 219.98 is: 330.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    271.22 : 406.92 = 219.98 : x
  2. Step 2: Convert to fraction form
    271.22/406.92 = 219.98/x
  3. Step 3: Cross multiply
    271.22x = 406.92 × 219.98
  4. Step 4: Simplify right side
    271.22x = 89,516.10
  5. Step 5: Solve for x
    x = 89,516.10/271.22
  6. Step 6: Final answer
    x = 330.06

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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.