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Finding the Fourth Proportional to 251.40, 377.15 and 114.49

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Solution

The fourth proportional to 251.40, 377.15 and 114.49 is: 171.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.40 : 377.15 = 114.49 : x
  2. Step 2: Convert to fraction form
    251.40/377.15 = 114.49/x
  3. Step 3: Cross multiply
    251.40x = 377.15 × 114.49
  4. Step 4: Simplify right side
    251.40x = 43,179.80
  5. Step 5: Solve for x
    x = 43,179.80/251.40
  6. Step 6: Final answer
    x = 171.75

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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.