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Finding the Fourth Proportional to 271.21, 406.12 and 225.43

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Solution

The fourth proportional to 271.21, 406.12 and 225.43 is: 337.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    271.21 : 406.12 = 225.43 : x
  2. Step 2: Convert to fraction form
    271.21/406.12 = 225.43/x
  3. Step 3: Cross multiply
    271.21x = 406.12 × 225.43
  4. Step 4: Simplify right side
    271.21x = 91,551.63
  5. Step 5: Solve for x
    x = 91,551.63/271.21
  6. Step 6: Final answer
    x = 337.57

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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.