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Finding the Fourth Proportional to 251.64, 377.52 and 121.88

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Solution

The fourth proportional to 251.64, 377.52 and 121.88 is: 182.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.64 : 377.52 = 121.88 : x
  2. Step 2: Convert to fraction form
    251.64/377.52 = 121.88/x
  3. Step 3: Cross multiply
    251.64x = 377.52 × 121.88
  4. Step 4: Simplify right side
    251.64x = 46,010.25
  5. Step 5: Solve for x
    x = 46,010.25/251.64
  6. Step 6: Final answer
    x = 182.84

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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.