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Finding the Fourth Proportional to 441.09, 662.18 and 279.45

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Solution

The fourth proportional to 441.09, 662.18 and 279.45 is: 419.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.09 : 662.18 = 279.45 : x
  2. Step 2: Convert to fraction form
    441.09/662.18 = 279.45/x
  3. Step 3: Cross multiply
    441.09x = 662.18 × 279.45
  4. Step 4: Simplify right side
    441.09x = 185,044.80
  5. Step 5: Solve for x
    x = 185,044.80/441.09
  6. Step 6: Final answer
    x = 419.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.