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Finding the Fourth Proportional to 418.89, 625.86 and 404.54

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Solution

The fourth proportional to 418.89, 625.86 and 404.54 is: 604.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    418.89 : 625.86 = 404.54 : x
  2. Step 2: Convert to fraction form
    418.89/625.86 = 404.54/x
  3. Step 3: Cross multiply
    418.89x = 625.86 × 404.54
  4. Step 4: Simplify right side
    418.89x = 253,180.25
  5. Step 5: Solve for x
    x = 253,180.25/418.89
  6. Step 6: Final answer
    x = 604.41

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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.