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Finding the Fourth Proportional to 439.21, 605.97 and 262.18

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Solution

The fourth proportional to 439.21, 605.97 and 262.18 is: 361.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.21 : 605.97 = 262.18 : x
  2. Step 2: Convert to fraction form
    439.21/605.97 = 262.18/x
  3. Step 3: Cross multiply
    439.21x = 605.97 × 262.18
  4. Step 4: Simplify right side
    439.21x = 158,873.21
  5. Step 5: Solve for x
    x = 158,873.21/439.21
  6. Step 6: Final answer
    x = 361.72

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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.