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Finding the Fourth Proportional to 349.31, 523.96 and 154.27

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Solution

The fourth proportional to 349.31, 523.96 and 154.27 is: 231.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.31 : 523.96 = 154.27 : x
  2. Step 2: Convert to fraction form
    349.31/523.96 = 154.27/x
  3. Step 3: Cross multiply
    349.31x = 523.96 × 154.27
  4. Step 4: Simplify right side
    349.31x = 80,831.31
  5. Step 5: Solve for x
    x = 80,831.31/349.31
  6. Step 6: Final answer
    x = 231.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.