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Finding the Fourth Proportional to 350.44, 483.06 and 280.78

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Solution

The fourth proportional to 350.44, 483.06 and 280.78 is: 387.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    350.44 : 483.06 = 280.78 : x
  2. Step 2: Convert to fraction form
    350.44/483.06 = 280.78/x
  3. Step 3: Cross multiply
    350.44x = 483.06 × 280.78
  4. Step 4: Simplify right side
    350.44x = 135,633.59
  5. Step 5: Solve for x
    x = 135,633.59/350.44
  6. Step 6: Final answer
    x = 387.04

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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.