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Finding the Fourth Proportional to 350.30, 483.45 and 239.69

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Solution

The fourth proportional to 350.30, 483.45 and 239.69 is: 330.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    350.30 : 483.45 = 239.69 : x
  2. Step 2: Convert to fraction form
    350.30/483.45 = 239.69/x
  3. Step 3: Cross multiply
    350.30x = 483.45 × 239.69
  4. Step 4: Simplify right side
    350.30x = 115,878.13
  5. Step 5: Solve for x
    x = 115,878.13/350.30
  6. Step 6: Final answer
    x = 330.80

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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.