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Finding the Fourth Proportional to 281.62, 388.61 and 182.18

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Solution

The fourth proportional to 281.62, 388.61 and 182.18 is: 251.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    281.62 : 388.61 = 182.18 : x
  2. Step 2: Convert to fraction form
    281.62/388.61 = 182.18/x
  3. Step 3: Cross multiply
    281.62x = 388.61 × 182.18
  4. Step 4: Simplify right side
    281.62x = 70,797.71
  5. Step 5: Solve for x
    x = 70,797.71/281.62
  6. Step 6: Final answer
    x = 251.39

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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.