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Finding the Fourth Proportional to 222.92, 334.51 and 126.80

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Solution

The fourth proportional to 222.92, 334.51 and 126.80 is: 190.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.92 : 334.51 = 126.80 : x
  2. Step 2: Convert to fraction form
    222.92/334.51 = 126.80/x
  3. Step 3: Cross multiply
    222.92x = 334.51 × 126.80
  4. Step 4: Simplify right side
    222.92x = 42,415.87
  5. Step 5: Solve for x
    x = 42,415.87/222.92
  6. Step 6: Final answer
    x = 190.27

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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.