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Finding the Fourth Proportional to 281.37, 388.20 and 183.15

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Solution

The fourth proportional to 281.37, 388.20 and 183.15 is: 252.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    281.37 : 388.20 = 183.15 : x
  2. Step 2: Convert to fraction form
    281.37/388.20 = 183.15/x
  3. Step 3: Cross multiply
    281.37x = 388.20 × 183.15
  4. Step 4: Simplify right side
    281.37x = 71,098.83
  5. Step 5: Solve for x
    x = 71,098.83/281.37
  6. Step 6: Final answer
    x = 252.69

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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.