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Finding the Fourth Proportional to 662.05, 993.19 and 272.26

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Solution

The fourth proportional to 662.05, 993.19 and 272.26 is: 408.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.05 : 993.19 = 272.26 : x
  2. Step 2: Convert to fraction form
    662.05/993.19 = 272.26/x
  3. Step 3: Cross multiply
    662.05x = 993.19 × 272.26
  4. Step 4: Simplify right side
    662.05x = 270,406.21
  5. Step 5: Solve for x
    x = 270,406.21/662.05
  6. Step 6: Final answer
    x = 408.44

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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.