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Finding the Fourth Proportional to 483.50, 721.33 and 443.86

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Solution

The fourth proportional to 483.50, 721.33 and 443.86 is: 662.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.50 : 721.33 = 443.86 : x
  2. Step 2: Convert to fraction form
    483.50/721.33 = 443.86/x
  3. Step 3: Cross multiply
    483.50x = 721.33 × 443.86
  4. Step 4: Simplify right side
    483.50x = 320,166.62
  5. Step 5: Solve for x
    x = 320,166.62/483.50
  6. Step 6: Final answer
    x = 662.18

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.