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Finding the Fourth Proportional to 250.96, 376.46 and 77.62

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Solution

The fourth proportional to 250.96, 376.46 and 77.62 is: 116.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.96 : 376.46 = 77.62 : x
  2. Step 2: Convert to fraction form
    250.96/376.46 = 77.62/x
  3. Step 3: Cross multiply
    250.96x = 376.46 × 77.62
  4. Step 4: Simplify right side
    250.96x = 29,220.83
  5. Step 5: Solve for x
    x = 29,220.83/250.96
  6. Step 6: Final answer
    x = 116.44

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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.