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Finding the Fourth Proportional to 225.78, 337.02 and 198.44

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Solution

The fourth proportional to 225.78, 337.02 and 198.44 is: 296.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    225.78 : 337.02 = 198.44 : x
  2. Step 2: Convert to fraction form
    225.78/337.02 = 198.44/x
  3. Step 3: Cross multiply
    225.78x = 337.02 × 198.44
  4. Step 4: Simplify right side
    225.78x = 66,878.25
  5. Step 5: Solve for x
    x = 66,878.25/225.78
  6. Step 6: Final answer
    x = 296.21

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.