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Finding the Fourth Proportional to 224.80, 335.30 and 211.43

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Solution

The fourth proportional to 224.80, 335.30 and 211.43 is: 315.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.80 : 335.30 = 211.43 : x
  2. Step 2: Convert to fraction form
    224.80/335.30 = 211.43/x
  3. Step 3: Cross multiply
    224.80x = 335.30 × 211.43
  4. Step 4: Simplify right side
    224.80x = 70,892.26
  5. Step 5: Solve for x
    x = 70,892.26/224.80
  6. Step 6: Final answer
    x = 315.36

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.