Home / 1,213.20-1,819.80-335.70

Finding the Fourth Proportional to 1,213.20, 1,819.80 and 335.70

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Solution

The fourth proportional to 1,213.20, 1,819.80 and 335.70 is: 503.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213.20 : 1,819.80 = 335.70 : x
  2. Step 2: Convert to fraction form
    1,213.20/1,819.80 = 335.70/x
  3. Step 3: Cross multiply
    1,213.20x = 1,819.80 × 335.70
  4. Step 4: Simplify right side
    1,213.20x = 610,906.86
  5. Step 5: Solve for x
    x = 610,906.86/1,213.20
  6. Step 6: Final answer
    x = 503.55

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Similar ratio
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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.