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Finding the Fourth Proportional to 441.21, 609.27 and 275.47

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Solution

The fourth proportional to 441.21, 609.27 and 275.47 is: 380.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.21 : 609.27 = 275.47 : x
  2. Step 2: Convert to fraction form
    441.21/609.27 = 275.47/x
  3. Step 3: Cross multiply
    441.21x = 609.27 × 275.47
  4. Step 4: Simplify right side
    441.21x = 167,834.60
  5. Step 5: Solve for x
    x = 167,834.60/441.21
  6. Step 6: Final answer
    x = 380.39

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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.