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Finding the Fourth Proportional to 441.24, 662.10 and 418.20

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Solution

The fourth proportional to 441.24, 662.10 and 418.20 is: 627.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.24 : 662.10 = 418.20 : x
  2. Step 2: Convert to fraction form
    441.24/662.10 = 418.20/x
  3. Step 3: Cross multiply
    441.24x = 662.10 × 418.20
  4. Step 4: Simplify right side
    441.24x = 276,890.22
  5. Step 5: Solve for x
    x = 276,890.22/441.24
  6. Step 6: Final answer
    x = 627.53

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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.