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Finding the Fourth Proportional to 224.52, 336.37 and 128.13

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Solution

The fourth proportional to 224.52, 336.37 and 128.13 is: 191.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.52 : 336.37 = 128.13 : x
  2. Step 2: Convert to fraction form
    224.52/336.37 = 128.13/x
  3. Step 3: Cross multiply
    224.52x = 336.37 × 128.13
  4. Step 4: Simplify right side
    224.52x = 43,099.09
  5. Step 5: Solve for x
    x = 43,099.09/224.52
  6. Step 6: Final answer
    x = 191.96

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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.