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Finding the Fourth Proportional to 381.92, 573.12 and 151

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Solution

The fourth proportional to 381.92, 573.12 and 151 is: 226.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    381.92 : 573.12 = 151 : x
  2. Step 2: Convert to fraction form
    381.92/573.12 = 151/x
  3. Step 3: Cross multiply
    381.92x = 573.12 × 151
  4. Step 4: Simplify right side
    381.92x = 86,541.12
  5. Step 5: Solve for x
    x = 86,541.12/381.92
  6. Step 6: Final answer
    x = 226.59

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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.