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Finding the Fourth Proportional to 222.45, 333.61 and 106.83

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Solution

The fourth proportional to 222.45, 333.61 and 106.83 is: 160.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.45 : 333.61 = 106.83 : x
  2. Step 2: Convert to fraction form
    222.45/333.61 = 106.83/x
  3. Step 3: Cross multiply
    222.45x = 333.61 × 106.83
  4. Step 4: Simplify right side
    222.45x = 35,639.56
  5. Step 5: Solve for x
    x = 35,639.56/222.45
  6. Step 6: Final answer
    x = 160.21

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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.