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Finding the Fourth Proportional to 441.29, 609.45 and 275.90

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Solution

The fourth proportional to 441.29, 609.45 and 275.90 is: 381.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.29 : 609.45 = 275.90 : x
  2. Step 2: Convert to fraction form
    441.29/609.45 = 275.90/x
  3. Step 3: Cross multiply
    441.29x = 609.45 × 275.90
  4. Step 4: Simplify right side
    441.29x = 168,147.26
  5. Step 5: Solve for x
    x = 168,147.26/441.29
  6. Step 6: Final answer
    x = 381.04

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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.