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Finding the Fourth Proportional to 222.78, 335.51 and 196.02

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Solution

The fourth proportional to 222.78, 335.51 and 196.02 is: 295.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.78 : 335.51 = 196.02 : x
  2. Step 2: Convert to fraction form
    222.78/335.51 = 196.02/x
  3. Step 3: Cross multiply
    222.78x = 335.51 × 196.02
  4. Step 4: Simplify right side
    222.78x = 65,765.69
  5. Step 5: Solve for x
    x = 65,765.69/222.78
  6. Step 6: Final answer
    x = 295.20

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.