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Finding the Fourth Proportional to 605.10, 834.78 and 368.85

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Solution

The fourth proportional to 605.10, 834.78 and 368.85 is: 508.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.10 : 834.78 = 368.85 : x
  2. Step 2: Convert to fraction form
    605.10/834.78 = 368.85/x
  3. Step 3: Cross multiply
    605.10x = 834.78 × 368.85
  4. Step 4: Simplify right side
    605.10x = 307,908.60
  5. Step 5: Solve for x
    x = 307,908.60/605.10
  6. Step 6: Final answer
    x = 508.86

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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.