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Finding the Fourth Proportional to 441.81, 608.40 and 331.11

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Solution

The fourth proportional to 441.81, 608.40 and 331.11 is: 455.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.81 : 608.40 = 331.11 : x
  2. Step 2: Convert to fraction form
    441.81/608.40 = 331.11/x
  3. Step 3: Cross multiply
    441.81x = 608.40 × 331.11
  4. Step 4: Simplify right side
    441.81x = 201,447.32
  5. Step 5: Solve for x
    x = 201,447.32/441.81
  6. Step 6: Final answer
    x = 455.96

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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.