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Finding the Fourth Proportional to 205.50, 283.70 and 131.88

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Solution

The fourth proportional to 205.50, 283.70 and 131.88 is: 182.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    205.50 : 283.70 = 131.88 : x
  2. Step 2: Convert to fraction form
    205.50/283.70 = 131.88/x
  3. Step 3: Cross multiply
    205.50x = 283.70 × 131.88
  4. Step 4: Simplify right side
    205.50x = 37,414.36
  5. Step 5: Solve for x
    x = 37,414.36/205.50
  6. Step 6: Final answer
    x = 182.06

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