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Finding the Fourth Proportional to 271.32, 406.78 and 168.46

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Solution

The fourth proportional to 271.32, 406.78 and 168.46 is: 252.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    271.32 : 406.78 = 168.46 : x
  2. Step 2: Convert to fraction form
    271.32/406.78 = 168.46/x
  3. Step 3: Cross multiply
    271.32x = 406.78 × 168.46
  4. Step 4: Simplify right side
    271.32x = 68,526.16
  5. Step 5: Solve for x
    x = 68,526.16/271.32
  6. Step 6: Final answer
    x = 252.57

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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.