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Finding the Fourth Proportional to 439.20, 605.94 and 264.60

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Solution

The fourth proportional to 439.20, 605.94 and 264.60 is: 365.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.20 : 605.94 = 264.60 : x
  2. Step 2: Convert to fraction form
    439.20/605.94 = 264.60/x
  3. Step 3: Cross multiply
    439.20x = 605.94 × 264.60
  4. Step 4: Simplify right side
    439.20x = 160,331.72
  5. Step 5: Solve for x
    x = 160,331.72/439.20
  6. Step 6: Final answer
    x = 365.05

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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.