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Finding the Fourth Proportional to 350.40, 483.94 and 239.68

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Solution

The fourth proportional to 350.40, 483.94 and 239.68 is: 331.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    350.40 : 483.94 = 239.68 : x
  2. Step 2: Convert to fraction form
    350.40/483.94 = 239.68/x
  3. Step 3: Cross multiply
    350.40x = 483.94 × 239.68
  4. Step 4: Simplify right side
    350.40x = 115,990.74
  5. Step 5: Solve for x
    x = 115,990.74/350.40
  6. Step 6: Final answer
    x = 331.02

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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.