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Finding the Fourth Proportional to 441.97, 609.53 and 276.21

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Solution

The fourth proportional to 441.97, 609.53 and 276.21 is: 380.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.97 : 609.53 = 276.21 : x
  2. Step 2: Convert to fraction form
    441.97/609.53 = 276.21/x
  3. Step 3: Cross multiply
    441.97x = 609.53 × 276.21
  4. Step 4: Simplify right side
    441.97x = 168,356.90
  5. Step 5: Solve for x
    x = 168,356.90/441.97
  6. Step 6: Final answer
    x = 380.92

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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.