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Finding the Fourth Proportional to 350.20, 483.32 and 239.78

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Solution

The fourth proportional to 350.20, 483.32 and 239.78 is: 330.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    350.20 : 483.32 = 239.78 : x
  2. Step 2: Convert to fraction form
    350.20/483.32 = 239.78/x
  3. Step 3: Cross multiply
    350.20x = 483.32 × 239.78
  4. Step 4: Simplify right side
    350.20x = 115,890.47
  5. Step 5: Solve for x
    x = 115,890.47/350.20
  6. Step 6: Final answer
    x = 330.93

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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.