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Finding the Fourth Proportional to 250.43, 376.17 and 211.98

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Solution

The fourth proportional to 250.43, 376.17 and 211.98 is: 318.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.43 : 376.17 = 211.98 : x
  2. Step 2: Convert to fraction form
    250.43/376.17 = 211.98/x
  3. Step 3: Cross multiply
    250.43x = 376.17 × 211.98
  4. Step 4: Simplify right side
    250.43x = 79,740.52
  5. Step 5: Solve for x
    x = 79,740.52/250.43
  6. Step 6: Final answer
    x = 318.42

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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.