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Finding the Fourth Proportional to 223.95, 336.20 and 126.54

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Solution

The fourth proportional to 223.95, 336.20 and 126.54 is: 189.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.95 : 336.20 = 126.54 : x
  2. Step 2: Convert to fraction form
    223.95/336.20 = 126.54/x
  3. Step 3: Cross multiply
    223.95x = 336.20 × 126.54
  4. Step 4: Simplify right side
    223.95x = 42,541.88
  5. Step 5: Solve for x
    x = 42,541.88/223.95
  6. Step 6: Final answer
    x = 189.96

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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.