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Finding the Fourth Proportional to 481.88, 721.54 and 404.99

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Solution

The fourth proportional to 481.88, 721.54 and 404.99 is: 606.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.88 : 721.54 = 404.99 : x
  2. Step 2: Convert to fraction form
    481.88/721.54 = 404.99/x
  3. Step 3: Cross multiply
    481.88x = 721.54 × 404.99
  4. Step 4: Simplify right side
    481.88x = 292,218.79
  5. Step 5: Solve for x
    x = 292,218.79/481.88
  6. Step 6: Final answer
    x = 606.41

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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.