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Finding the Fourth Proportional to 222.26, 333.22 and 83.40

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Solution

The fourth proportional to 222.26, 333.22 and 83.40 is: 125.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.26 : 333.22 = 83.40 : x
  2. Step 2: Convert to fraction form
    222.26/333.22 = 83.40/x
  3. Step 3: Cross multiply
    222.26x = 333.22 × 83.40
  4. Step 4: Simplify right side
    222.26x = 27,790.55
  5. Step 5: Solve for x
    x = 27,790.55/222.26
  6. Step 6: Final answer
    x = 125.04

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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.