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Finding the Fourth Proportional to 905.94, 1,250.60 and 611.37

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Solution

The fourth proportional to 905.94, 1,250.60 and 611.37 is: 843.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    905.94 : 1,250.60 = 611.37 : x
  2. Step 2: Convert to fraction form
    905.94/1,250.60 = 611.37/x
  3. Step 3: Cross multiply
    905.94x = 1,250.60 × 611.37
  4. Step 4: Simplify right side
    905.94x = 764,576.27
  5. Step 5: Solve for x
    x = 764,576.27/905.94
  6. Step 6: Final answer
    x = 843.96

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Double scale
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1.5x scale

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.