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Finding the Fourth Proportional to 251.06, 378.77 and 250.38

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Solution

The fourth proportional to 251.06, 378.77 and 250.38 is: 377.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.06 : 378.77 = 250.38 : x
  2. Step 2: Convert to fraction form
    251.06/378.77 = 250.38/x
  3. Step 3: Cross multiply
    251.06x = 378.77 × 250.38
  4. Step 4: Simplify right side
    251.06x = 94,835.18
  5. Step 5: Solve for x
    x = 94,835.18/251.06
  6. Step 6: Final answer
    x = 377.75

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.