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Finding the Fourth Proportional to 224.49, 311.08 and 210.79

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Solution

The fourth proportional to 224.49, 311.08 and 210.79 is: 292.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.49 : 311.08 = 210.79 : x
  2. Step 2: Convert to fraction form
    224.49/311.08 = 210.79/x
  3. Step 3: Cross multiply
    224.49x = 311.08 × 210.79
  4. Step 4: Simplify right side
    224.49x = 65,572.55
  5. Step 5: Solve for x
    x = 65,572.55/224.49
  6. Step 6: Final answer
    x = 292.10

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.