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Finding the Fourth Proportional to 605.60, 836.41 and 408.77

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Solution

The fourth proportional to 605.60, 836.41 and 408.77 is: 564.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.60 : 836.41 = 408.77 : x
  2. Step 2: Convert to fraction form
    605.60/836.41 = 408.77/x
  3. Step 3: Cross multiply
    605.60x = 836.41 × 408.77
  4. Step 4: Simplify right side
    605.60x = 341,902.09
  5. Step 5: Solve for x
    x = 341,902.09/605.60
  6. Step 6: Final answer
    x = 564.57

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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.