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Finding the Fourth Proportional to 222.12, 333.60 and 194.79

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Solution

The fourth proportional to 222.12, 333.60 and 194.79 is: 292.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.12 : 333.60 = 194.79 : x
  2. Step 2: Convert to fraction form
    222.12/333.60 = 194.79/x
  3. Step 3: Cross multiply
    222.12x = 333.60 × 194.79
  4. Step 4: Simplify right side
    222.12x = 64,981.94
  5. Step 5: Solve for x
    x = 64,981.94/222.12
  6. Step 6: Final answer
    x = 292.55

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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.