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Finding the Fourth Proportional to 205.10, 283.04 and 126.42

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Solution

The fourth proportional to 205.10, 283.04 and 126.42 is: 174.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    205.10 : 283.04 = 126.42 : x
  2. Step 2: Convert to fraction form
    205.10/283.04 = 126.42/x
  3. Step 3: Cross multiply
    205.10x = 283.04 × 126.42
  4. Step 4: Simplify right side
    205.10x = 35,781.92
  5. Step 5: Solve for x
    x = 35,781.92/205.10
  6. Step 6: Final answer
    x = 174.46

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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.