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Finding the Fourth Proportional to 1,081.33, 1,621.62 and 350.73

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Solution

The fourth proportional to 1,081.33, 1,621.62 and 350.73 is: 525.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,081.33 : 1,621.62 = 350.73 : x
  2. Step 2: Convert to fraction form
    1,081.33/1,621.62 = 350.73/x
  3. Step 3: Cross multiply
    1,081.33x = 1,621.62 × 350.73
  4. Step 4: Simplify right side
    1,081.33x = 568,750.78
  5. Step 5: Solve for x
    x = 568,750.78/1,081.33
  6. Step 6: Final answer
    x = 525.97

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Double scale
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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.