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Finding the Fourth Proportional to 244.50, 336.20 and 211.70

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Solution

The fourth proportional to 244.50, 336.20 and 211.70 is: 291.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    244.50 : 336.20 = 211.70 : x
  2. Step 2: Convert to fraction form
    244.50/336.20 = 211.70/x
  3. Step 3: Cross multiply
    244.50x = 336.20 × 211.70
  4. Step 4: Simplify right side
    244.50x = 71,170.80
  5. Step 5: Solve for x
    x = 71,170.80/244.50
  6. Step 6: Final answer
    x = 291.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.