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Finding the Fourth Proportional to 350.91, 523.21 and 338.84

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Solution

The fourth proportional to 350.91, 523.21 and 338.84 is: 505.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    350.91 : 523.21 = 338.84 : x
  2. Step 2: Convert to fraction form
    350.91/523.21 = 338.84/x
  3. Step 3: Cross multiply
    350.91x = 523.21 × 338.84
  4. Step 4: Simplify right side
    350.91x = 177,284.48
  5. Step 5: Solve for x
    x = 177,284.48/350.91
  6. Step 6: Final answer
    x = 505.21

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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.