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Finding the Fourth Proportional to 605.36, 834.82 and 395.47

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Solution

The fourth proportional to 605.36, 834.82 and 395.47 is: 545.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.36 : 834.82 = 395.47 : x
  2. Step 2: Convert to fraction form
    605.36/834.82 = 395.47/x
  3. Step 3: Cross multiply
    605.36x = 834.82 × 395.47
  4. Step 4: Simplify right side
    605.36x = 330,143.85
  5. Step 5: Solve for x
    x = 330,143.85/605.36
  6. Step 6: Final answer
    x = 545.37

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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.