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Finding the Fourth Proportional to 439.05, 658.71 and 195.54

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Solution

The fourth proportional to 439.05, 658.71 and 195.54 is: 293.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.05 : 658.71 = 195.54 : x
  2. Step 2: Convert to fraction form
    439.05/658.71 = 195.54/x
  3. Step 3: Cross multiply
    439.05x = 658.71 × 195.54
  4. Step 4: Simplify right side
    439.05x = 128,804.15
  5. Step 5: Solve for x
    x = 128,804.15/439.05
  6. Step 6: Final answer
    x = 293.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.