Home / 1,244.92-1,867.39-423.20

Finding the Fourth Proportional to 1,244.92, 1,867.39 and 423.20

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Solution

The fourth proportional to 1,244.92, 1,867.39 and 423.20 is: 634.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,244.92 : 1,867.39 = 423.20 : x
  2. Step 2: Convert to fraction form
    1,244.92/1,867.39 = 423.20/x
  3. Step 3: Cross multiply
    1,244.92x = 1,867.39 × 423.20
  4. Step 4: Simplify right side
    1,244.92x = 790,279.45
  5. Step 5: Solve for x
    x = 790,279.45/1,244.92
  6. Step 6: Final answer
    x = 634.80

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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.