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Finding the Fourth Proportional to 224.57, 337.21 and 215.21

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Solution

The fourth proportional to 224.57, 337.21 and 215.21 is: 323.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.57 : 337.21 = 215.21 : x
  2. Step 2: Convert to fraction form
    224.57/337.21 = 215.21/x
  3. Step 3: Cross multiply
    224.57x = 337.21 × 215.21
  4. Step 4: Simplify right side
    224.57x = 72,571.27
  5. Step 5: Solve for x
    x = 72,571.27/224.57
  6. Step 6: Final answer
    x = 323.15

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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.