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Finding the Fourth Proportional to 605.06, 834.57 and 438.91

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Solution

The fourth proportional to 605.06, 834.57 and 438.91 is: 605.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.06 : 834.57 = 438.91 : x
  2. Step 2: Convert to fraction form
    605.06/834.57 = 438.91/x
  3. Step 3: Cross multiply
    605.06x = 834.57 × 438.91
  4. Step 4: Simplify right side
    605.06x = 366,294.75
  5. Step 5: Solve for x
    x = 366,294.75/605.06
  6. Step 6: Final answer
    x = 605.39

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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.