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Finding the Fourth Proportional to 444.68, 662.41 and 438.92

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Solution

The fourth proportional to 444.68, 662.41 and 438.92 is: 653.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.68 : 662.41 = 438.92 : x
  2. Step 2: Convert to fraction form
    444.68/662.41 = 438.92/x
  3. Step 3: Cross multiply
    444.68x = 662.41 × 438.92
  4. Step 4: Simplify right side
    444.68x = 290,745.00
  5. Step 5: Solve for x
    x = 290,745.00/444.68
  6. Step 6: Final answer
    x = 653.83

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.