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Finding the Fourth Proportional to 271.53, 406.33 and 198.49

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Solution

The fourth proportional to 271.53, 406.33 and 198.49 is: 297.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    271.53 : 406.33 = 198.49 : x
  2. Step 2: Convert to fraction form
    271.53/406.33 = 198.49/x
  3. Step 3: Cross multiply
    271.53x = 406.33 × 198.49
  4. Step 4: Simplify right side
    271.53x = 80,652.44
  5. Step 5: Solve for x
    x = 80,652.44/271.53
  6. Step 6: Final answer
    x = 297.03

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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.