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Finding the Fourth Proportional to 251.88, 378.05 and 149.27

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Solution

The fourth proportional to 251.88, 378.05 and 149.27 is: 224.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.88 : 378.05 = 149.27 : x
  2. Step 2: Convert to fraction form
    251.88/378.05 = 149.27/x
  3. Step 3: Cross multiply
    251.88x = 378.05 × 149.27
  4. Step 4: Simplify right side
    251.88x = 56,428.89
  5. Step 5: Solve for x
    x = 56,428.89/251.88
  6. Step 6: Final answer
    x = 224.03

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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.