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Finding the Fourth Proportional to 439.07, 605.89 and 252.64

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Solution

The fourth proportional to 439.07, 605.89 and 252.64 is: 348.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.07 : 605.89 = 252.64 : x
  2. Step 2: Convert to fraction form
    439.07/605.89 = 252.64/x
  3. Step 3: Cross multiply
    439.07x = 605.89 × 252.64
  4. Step 4: Simplify right side
    439.07x = 153,072.05
  5. Step 5: Solve for x
    x = 153,072.05/439.07
  6. Step 6: Final answer
    x = 348.63

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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.