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Finding the Fourth Proportional to 441.45, 609.21 and 266.69

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Solution

The fourth proportional to 441.45, 609.21 and 266.69 is: 368.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.45 : 609.21 = 266.69 : x
  2. Step 2: Convert to fraction form
    441.45/609.21 = 266.69/x
  3. Step 3: Cross multiply
    441.45x = 609.21 × 266.69
  4. Step 4: Simplify right side
    441.45x = 162,470.21
  5. Step 5: Solve for x
    x = 162,470.21/441.45
  6. Step 6: Final answer
    x = 368.04

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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.