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Finding the Fourth Proportional to 408.44, 611.58 and 335

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Solution

The fourth proportional to 408.44, 611.58 and 335 is: 501.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    408.44 : 611.58 = 335 : x
  2. Step 2: Convert to fraction form
    408.44/611.58 = 335/x
  3. Step 3: Cross multiply
    408.44x = 611.58 × 335
  4. Step 4: Simplify right side
    408.44x = 204,879.30
  5. Step 5: Solve for x
    x = 204,879.30/408.44
  6. Step 6: Final answer
    x = 501.61

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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.