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Finding the Fourth Proportional to 281.32, 422.05 and 88.94

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Solution

The fourth proportional to 281.32, 422.05 and 88.94 is: 133.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    281.32 : 422.05 = 88.94 : x
  2. Step 2: Convert to fraction form
    281.32/422.05 = 88.94/x
  3. Step 3: Cross multiply
    281.32x = 422.05 × 88.94
  4. Step 4: Simplify right side
    281.32x = 37,537.13
  5. Step 5: Solve for x
    x = 37,537.13/281.32
  6. Step 6: Final answer
    x = 133.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.