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Finding the Fourth Proportional to 902.75, 1,244.97 and 548.37

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Solution

The fourth proportional to 902.75, 1,244.97 and 548.37 is: 756.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    902.75 : 1,244.97 = 548.37 : x
  2. Step 2: Convert to fraction form
    902.75/1,244.97 = 548.37/x
  3. Step 3: Cross multiply
    902.75x = 1,244.97 × 548.37
  4. Step 4: Simplify right side
    902.75x = 682,704.20
  5. Step 5: Solve for x
    x = 682,704.20/902.75
  6. Step 6: Final answer
    x = 756.25

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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.