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Finding the Fourth Proportional to 441.96, 609.85 and 286.71

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Solution

The fourth proportional to 441.96, 609.85 and 286.71 is: 395.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.96 : 609.85 = 286.71 : x
  2. Step 2: Convert to fraction form
    441.96/609.85 = 286.71/x
  3. Step 3: Cross multiply
    441.96x = 609.85 × 286.71
  4. Step 4: Simplify right side
    441.96x = 174,850.09
  5. Step 5: Solve for x
    x = 174,850.09/441.96
  6. Step 6: Final answer
    x = 395.62

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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.