Home / 1,244.76-1,867.23-422.70

Finding the Fourth Proportional to 1,244.76, 1,867.23 and 422.70

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Solution

The fourth proportional to 1,244.76, 1,867.23 and 422.70 is: 634.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,244.76 : 1,867.23 = 422.70 : x
  2. Step 2: Convert to fraction form
    1,244.76/1,867.23 = 422.70/x
  3. Step 3: Cross multiply
    1,244.76x = 1,867.23 × 422.70
  4. Step 4: Simplify right side
    1,244.76x = 789,278.12
  5. Step 5: Solve for x
    x = 789,278.12/1,244.76
  6. Step 6: Final answer
    x = 634.08

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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.