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Finding the Fourth Proportional to 906.57, 1,250.69 and 611.33

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Solution

The fourth proportional to 906.57, 1,250.69 and 611.33 is: 843.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    906.57 : 1,250.69 = 611.33 : x
  2. Step 2: Convert to fraction form
    906.57/1,250.69 = 611.33/x
  3. Step 3: Cross multiply
    906.57x = 1,250.69 × 611.33
  4. Step 4: Simplify right side
    906.57x = 764,575.01
  5. Step 5: Solve for x
    x = 764,575.01/906.57
  6. Step 6: Final answer
    x = 843.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.