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Finding the Fourth Proportional to 204.08, 281.36 and 148.72

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Solution

The fourth proportional to 204.08, 281.36 and 148.72 is: 205.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    204.08 : 281.36 = 148.72 : x
  2. Step 2: Convert to fraction form
    204.08/281.36 = 148.72/x
  3. Step 3: Cross multiply
    204.08x = 281.36 × 148.72
  4. Step 4: Simplify right side
    204.08x = 41,843.86
  5. Step 5: Solve for x
    x = 41,843.86/204.08
  6. Step 6: Final answer
    x = 205.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.