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Finding the Fourth Proportional to 205.26, 283.17 and 131.55

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Solution

The fourth proportional to 205.26, 283.17 and 131.55 is: 181.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    205.26 : 283.17 = 131.55 : x
  2. Step 2: Convert to fraction form
    205.26/283.17 = 131.55/x
  3. Step 3: Cross multiply
    205.26x = 283.17 × 131.55
  4. Step 4: Simplify right side
    205.26x = 37,251.01
  5. Step 5: Solve for x
    x = 37,251.01/205.26
  6. Step 6: Final answer
    x = 181.48

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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.