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Finding the Fourth Proportional to 441.98, 663 and 210.83

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Solution

The fourth proportional to 441.98, 663 and 210.83 is: 316.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.98 : 663 = 210.83 : x
  2. Step 2: Convert to fraction form
    441.98/663 = 210.83/x
  3. Step 3: Cross multiply
    441.98x = 663 × 210.83
  4. Step 4: Simplify right side
    441.98x = 139,780.29
  5. Step 5: Solve for x
    x = 139,780.29/441.98
  6. Step 6: Final answer
    x = 316.26

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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.