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Finding the Fourth Proportional to 441.81, 609.75 and 331.09

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Solution

The fourth proportional to 441.81, 609.75 and 331.09 is: 456.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.81 : 609.75 = 331.09 : x
  2. Step 2: Convert to fraction form
    441.81/609.75 = 331.09/x
  3. Step 3: Cross multiply
    441.81x = 609.75 × 331.09
  4. Step 4: Simplify right side
    441.81x = 201,880.60
  5. Step 5: Solve for x
    x = 201,880.60/441.81
  6. Step 6: Final answer
    x = 456.94

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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.