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Finding the Fourth Proportional to 444.24, 666 and 418.80

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Solution

The fourth proportional to 444.24, 666 and 418.80 is: 627.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.24 : 666 = 418.80 : x
  2. Step 2: Convert to fraction form
    444.24/666 = 418.80/x
  3. Step 3: Cross multiply
    444.24x = 666 × 418.80
  4. Step 4: Simplify right side
    444.24x = 278,920.80
  5. Step 5: Solve for x
    x = 278,920.80/444.24
  6. Step 6: Final answer
    x = 627.86

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