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Finding the Fourth Proportional to 222.62, 331.83 and 207.23

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Solution

The fourth proportional to 222.62, 331.83 and 207.23 is: 308.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.62 : 331.83 = 207.23 : x
  2. Step 2: Convert to fraction form
    222.62/331.83 = 207.23/x
  3. Step 3: Cross multiply
    222.62x = 331.83 × 207.23
  4. Step 4: Simplify right side
    222.62x = 68,763.47
  5. Step 5: Solve for x
    x = 68,763.47/222.62
  6. Step 6: Final answer
    x = 308.89

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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.