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Finding the Fourth Proportional to 251.64, 376.44 and 186.60

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Solution

The fourth proportional to 251.64, 376.44 and 186.60 is: 279.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.64 : 376.44 = 186.60 : x
  2. Step 2: Convert to fraction form
    251.64/376.44 = 186.60/x
  3. Step 3: Cross multiply
    251.64x = 376.44 × 186.60
  4. Step 4: Simplify right side
    251.64x = 70,243.70
  5. Step 5: Solve for x
    x = 70,243.70/251.64
  6. Step 6: Final answer
    x = 279.14

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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.