Home / 1,244.75-1,867.28-422.96

Finding the Fourth Proportional to 1,244.75, 1,867.28 and 422.96

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Solution

The fourth proportional to 1,244.75, 1,867.28 and 422.96 is: 634.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,244.75 : 1,867.28 = 422.96 : x
  2. Step 2: Convert to fraction form
    1,244.75/1,867.28 = 422.96/x
  3. Step 3: Cross multiply
    1,244.75x = 1,867.28 × 422.96
  4. Step 4: Simplify right side
    1,244.75x = 789,773.30
  5. Step 5: Solve for x
    x = 789,773.30/1,244.75
  6. Step 6: Final answer
    x = 634.49

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1.5x scale

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.