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Finding the Fourth Proportional to 483.06, 721.08 and 418.52

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Solution

The fourth proportional to 483.06, 721.08 and 418.52 is: 624.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.06 : 721.08 = 418.52 : x
  2. Step 2: Convert to fraction form
    483.06/721.08 = 418.52/x
  3. Step 3: Cross multiply
    483.06x = 721.08 × 418.52
  4. Step 4: Simplify right side
    483.06x = 301,782.97
  5. Step 5: Solve for x
    x = 301,782.97/483.06
  6. Step 6: Final answer
    x = 624.73

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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.