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Finding the Fourth Proportional to 662.66, 993.95 and 200.44

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Solution

The fourth proportional to 662.66, 993.95 and 200.44 is: 300.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.66 : 993.95 = 200.44 : x
  2. Step 2: Convert to fraction form
    662.66/993.95 = 200.44/x
  3. Step 3: Cross multiply
    662.66x = 993.95 × 200.44
  4. Step 4: Simplify right side
    662.66x = 199,223.87
  5. Step 5: Solve for x
    x = 199,223.87/662.66
  6. Step 6: Final answer
    x = 300.64

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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.