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Finding the Fourth Proportional to 271.05, 406.67 and 168.20

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Solution

The fourth proportional to 271.05, 406.67 and 168.20 is: 252.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    271.05 : 406.67 = 168.20 : x
  2. Step 2: Convert to fraction form
    271.05/406.67 = 168.20/x
  3. Step 3: Cross multiply
    271.05x = 406.67 × 168.20
  4. Step 4: Simplify right side
    271.05x = 68,401.89
  5. Step 5: Solve for x
    x = 68,401.89/271.05
  6. Step 6: Final answer
    x = 252.36

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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.