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Finding the Fourth Proportional to 222.26, 331.73 and 196.31

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Solution

The fourth proportional to 222.26, 331.73 and 196.31 is: 293.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.26 : 331.73 = 196.31 : x
  2. Step 2: Convert to fraction form
    222.26/331.73 = 196.31/x
  3. Step 3: Cross multiply
    222.26x = 331.73 × 196.31
  4. Step 4: Simplify right side
    222.26x = 65,120.75
  5. Step 5: Solve for x
    x = 65,120.75/222.26
  6. Step 6: Final answer
    x = 293.00

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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.