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Finding the Fourth Proportional to 488.89, 733.44 and 211.09

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Solution

The fourth proportional to 488.89, 733.44 and 211.09 is: 316.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.89 : 733.44 = 211.09 : x
  2. Step 2: Convert to fraction form
    488.89/733.44 = 211.09/x
  3. Step 3: Cross multiply
    488.89x = 733.44 × 211.09
  4. Step 4: Simplify right side
    488.89x = 154,821.85
  5. Step 5: Solve for x
    x = 154,821.85/488.89
  6. Step 6: Final answer
    x = 316.68

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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.