Home / 1,213.20-1,819.81-335.72

Finding the Fourth Proportional to 1,213.20, 1,819.81 and 335.72

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Solution

The fourth proportional to 1,213.20, 1,819.81 and 335.72 is: 503.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213.20 : 1,819.81 = 335.72 : x
  2. Step 2: Convert to fraction form
    1,213.20/1,819.81 = 335.72/x
  3. Step 3: Cross multiply
    1,213.20x = 1,819.81 × 335.72
  4. Step 4: Simplify right side
    1,213.20x = 610,951.58
  5. Step 5: Solve for x
    x = 610,951.58/1,213.20
  6. Step 6: Final answer
    x = 503.59

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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.