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Finding the Fourth Proportional to 222.62, 334.31 and 211.08

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Solution

The fourth proportional to 222.62, 334.31 and 211.08 is: 316.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.62 : 334.31 = 211.08 : x
  2. Step 2: Convert to fraction form
    222.62/334.31 = 211.08/x
  3. Step 3: Cross multiply
    222.62x = 334.31 × 211.08
  4. Step 4: Simplify right side
    222.62x = 70,563.43
  5. Step 5: Solve for x
    x = 70,563.43/222.62
  6. Step 6: Final answer
    x = 316.98

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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.