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Finding the Fourth Proportional to 222.60, 333.72 and 126.48

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Solution

The fourth proportional to 222.60, 333.72 and 126.48 is: 189.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.60 : 333.72 = 126.48 : x
  2. Step 2: Convert to fraction form
    222.60/333.72 = 126.48/x
  3. Step 3: Cross multiply
    222.60x = 333.72 × 126.48
  4. Step 4: Simplify right side
    222.60x = 42,208.91
  5. Step 5: Solve for x
    x = 42,208.91/222.60
  6. Step 6: Final answer
    x = 189.62

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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.