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Finding the Fourth Proportional to 605.06, 835.17 and 408.86

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Solution

The fourth proportional to 605.06, 835.17 and 408.86 is: 564.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.06 : 835.17 = 408.86 : x
  2. Step 2: Convert to fraction form
    605.06/835.17 = 408.86/x
  3. Step 3: Cross multiply
    605.06x = 835.17 × 408.86
  4. Step 4: Simplify right side
    605.06x = 341,467.61
  5. Step 5: Solve for x
    x = 341,467.61/605.06
  6. Step 6: Final answer
    x = 564.35

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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.