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Finding the Fourth Proportional to 483.23, 724.84 and 478.44

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Solution

The fourth proportional to 483.23, 724.84 and 478.44 is: 717.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.23 : 724.84 = 478.44 : x
  2. Step 2: Convert to fraction form
    483.23/724.84 = 478.44/x
  3. Step 3: Cross multiply
    483.23x = 724.84 × 478.44
  4. Step 4: Simplify right side
    483.23x = 346,791.25
  5. Step 5: Solve for x
    x = 346,791.25/483.23
  6. Step 6: Final answer
    x = 717.65

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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.