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Finding the Fourth Proportional to 250.78, 376.30 and 179.22

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Solution

The fourth proportional to 250.78, 376.30 and 179.22 is: 268.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.78 : 376.30 = 179.22 : x
  2. Step 2: Convert to fraction form
    250.78/376.30 = 179.22/x
  3. Step 3: Cross multiply
    250.78x = 376.30 × 179.22
  4. Step 4: Simplify right side
    250.78x = 67,440.49
  5. Step 5: Solve for x
    x = 67,440.49/250.78
  6. Step 6: Final answer
    x = 268.92

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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.