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Finding the Fourth Proportional to 223.62, 335.42 and 206.91

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Solution

The fourth proportional to 223.62, 335.42 and 206.91 is: 310.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.62 : 335.42 = 206.91 : x
  2. Step 2: Convert to fraction form
    223.62/335.42 = 206.91/x
  3. Step 3: Cross multiply
    223.62x = 335.42 × 206.91
  4. Step 4: Simplify right side
    223.62x = 69,401.75
  5. Step 5: Solve for x
    x = 69,401.75/223.62
  6. Step 6: Final answer
    x = 310.36

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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.