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Finding the Fourth Proportional to 224.88, 336.52 and 138.24

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Solution

The fourth proportional to 224.88, 336.52 and 138.24 is: 206.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.88 : 336.52 = 138.24 : x
  2. Step 2: Convert to fraction form
    224.88/336.52 = 138.24/x
  3. Step 3: Cross multiply
    224.88x = 336.52 × 138.24
  4. Step 4: Simplify right side
    224.88x = 46,520.70
  5. Step 5: Solve for x
    x = 46,520.70/224.88
  6. Step 6: Final answer
    x = 206.87

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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.