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Finding the Fourth Proportional to 224.44, 334.70 and 212.20

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Solution

The fourth proportional to 224.44, 334.70 and 212.20 is: 316.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.44 : 334.70 = 212.20 : x
  2. Step 2: Convert to fraction form
    224.44/334.70 = 212.20/x
  3. Step 3: Cross multiply
    224.44x = 334.70 × 212.20
  4. Step 4: Simplify right side
    224.44x = 71,023.34
  5. Step 5: Solve for x
    x = 71,023.34/224.44
  6. Step 6: Final answer
    x = 316.45

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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.