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Finding the Fourth Proportional to 490.14, 733.05 and 399.42

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Solution

The fourth proportional to 490.14, 733.05 and 399.42 is: 597.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.14 : 733.05 = 399.42 : x
  2. Step 2: Convert to fraction form
    490.14/733.05 = 399.42/x
  3. Step 3: Cross multiply
    490.14x = 733.05 × 399.42
  4. Step 4: Simplify right side
    490.14x = 292,794.83
  5. Step 5: Solve for x
    x = 292,794.83/490.14
  6. Step 6: Final answer
    x = 597.37

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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.