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Finding the Fourth Proportional to 902.14, 1,244.77 and 548.25

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Solution

The fourth proportional to 902.14, 1,244.77 and 548.25 is: 756.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    902.14 : 1,244.77 = 548.25 : x
  2. Step 2: Convert to fraction form
    902.14/1,244.77 = 548.25/x
  3. Step 3: Cross multiply
    902.14x = 1,244.77 × 548.25
  4. Step 4: Simplify right side
    902.14x = 682,443.78
  5. Step 5: Solve for x
    x = 682,443.78/902.14
  6. Step 6: Final answer
    x = 756.47

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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.