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Finding the Fourth Proportional to 251.87, 378.36 and 154.62

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Solution

The fourth proportional to 251.87, 378.36 and 154.62 is: 232.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.87 : 378.36 = 154.62 : x
  2. Step 2: Convert to fraction form
    251.87/378.36 = 154.62/x
  3. Step 3: Cross multiply
    251.87x = 378.36 × 154.62
  4. Step 4: Simplify right side
    251.87x = 58,502.02
  5. Step 5: Solve for x
    x = 58,502.02/251.87
  6. Step 6: Final answer
    x = 232.28

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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.