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Finding the Fourth Proportional to 906.33, 1,250.34 and 611.13

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Solution

The fourth proportional to 906.33, 1,250.34 and 611.13 is: 843.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    906.33 : 1,250.34 = 611.13 : x
  2. Step 2: Convert to fraction form
    906.33/1,250.34 = 611.13/x
  3. Step 3: Cross multiply
    906.33x = 1,250.34 × 611.13
  4. Step 4: Simplify right side
    906.33x = 764,120.28
  5. Step 5: Solve for x
    x = 764,120.28/906.33
  6. Step 6: Final answer
    x = 843.09

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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.