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Finding the Fourth Proportional to 613.70, 919.98 and 366.97

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Solution

The fourth proportional to 613.70, 919.98 and 366.97 is: 550.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.70 : 919.98 = 366.97 : x
  2. Step 2: Convert to fraction form
    613.70/919.98 = 366.97/x
  3. Step 3: Cross multiply
    613.70x = 919.98 × 366.97
  4. Step 4: Simplify right side
    613.70x = 337,605.06
  5. Step 5: Solve for x
    x = 337,605.06/613.70
  6. Step 6: Final answer
    x = 550.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.