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Finding the Fourth Proportional to 251.08, 376.70 and 137

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Solution

The fourth proportional to 251.08, 376.70 and 137 is: 205.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.08 : 376.70 = 137 : x
  2. Step 2: Convert to fraction form
    251.08/376.70 = 137/x
  3. Step 3: Cross multiply
    251.08x = 376.70 × 137
  4. Step 4: Simplify right side
    251.08x = 51,607.90
  5. Step 5: Solve for x
    x = 51,607.90/251.08
  6. Step 6: Final answer
    x = 205.54

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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.