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Finding the Fourth Proportional to 439.12, 605.97 and 242.64

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Solution

The fourth proportional to 439.12, 605.97 and 242.64 is: 334.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.12 : 605.97 = 242.64 : x
  2. Step 2: Convert to fraction form
    439.12/605.97 = 242.64/x
  3. Step 3: Cross multiply
    439.12x = 605.97 × 242.64
  4. Step 4: Simplify right side
    439.12x = 147,032.56
  5. Step 5: Solve for x
    x = 147,032.56/439.12
  6. Step 6: Final answer
    x = 334.83

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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.