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Finding the Fourth Proportional to 293.99, 405.38 and 200.75

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Solution

The fourth proportional to 293.99, 405.38 and 200.75 is: 276.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.99 : 405.38 = 200.75 : x
  2. Step 2: Convert to fraction form
    293.99/405.38 = 200.75/x
  3. Step 3: Cross multiply
    293.99x = 405.38 × 200.75
  4. Step 4: Simplify right side
    293.99x = 81,380.04
  5. Step 5: Solve for x
    x = 81,380.04/293.99
  6. Step 6: Final answer
    x = 276.81

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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.