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Finding the Fourth Proportional to 281.32, 388.26 and 194.10

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Solution

The fourth proportional to 281.32, 388.26 and 194.10 is: 267.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    281.32 : 388.26 = 194.10 : x
  2. Step 2: Convert to fraction form
    281.32/388.26 = 194.10/x
  3. Step 3: Cross multiply
    281.32x = 388.26 × 194.10
  4. Step 4: Simplify right side
    281.32x = 75,361.27
  5. Step 5: Solve for x
    x = 75,361.27/281.32
  6. Step 6: Final answer
    x = 267.88

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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.