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Finding the Fourth Proportional to 281.87, 422.68 and 110.75

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Solution

The fourth proportional to 281.87, 422.68 and 110.75 is: 166.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    281.87 : 422.68 = 110.75 : x
  2. Step 2: Convert to fraction form
    281.87/422.68 = 110.75/x
  3. Step 3: Cross multiply
    281.87x = 422.68 × 110.75
  4. Step 4: Simplify right side
    281.87x = 46,811.81
  5. Step 5: Solve for x
    x = 46,811.81/281.87
  6. Step 6: Final answer
    x = 166.08

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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.