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Finding the Fourth Proportional to 251.48, 377.38 and 179.40

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Solution

The fourth proportional to 251.48, 377.38 and 179.40 is: 269.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.48 : 377.38 = 179.40 : x
  2. Step 2: Convert to fraction form
    251.48/377.38 = 179.40/x
  3. Step 3: Cross multiply
    251.48x = 377.38 × 179.40
  4. Step 4: Simplify right side
    251.48x = 67,701.97
  5. Step 5: Solve for x
    x = 67,701.97/251.48
  6. Step 6: Final answer
    x = 269.21

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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.