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Finding the Fourth Proportional to 331.81, 457.83 and 200.80

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Solution

The fourth proportional to 331.81, 457.83 and 200.80 is: 277.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.81 : 457.83 = 200.80 : x
  2. Step 2: Convert to fraction form
    331.81/457.83 = 200.80/x
  3. Step 3: Cross multiply
    331.81x = 457.83 × 200.80
  4. Step 4: Simplify right side
    331.81x = 91,932.26
  5. Step 5: Solve for x
    x = 91,932.26/331.81
  6. Step 6: Final answer
    x = 277.06

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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.