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Finding the Fourth Proportional to 408.30, 608.88 and 404.70

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Solution

The fourth proportional to 408.30, 608.88 and 404.70 is: 603.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    408.30 : 608.88 = 404.70 : x
  2. Step 2: Convert to fraction form
    408.30/608.88 = 404.70/x
  3. Step 3: Cross multiply
    408.30x = 608.88 × 404.70
  4. Step 4: Simplify right side
    408.30x = 246,413.74
  5. Step 5: Solve for x
    x = 246,413.74/408.30
  6. Step 6: Final answer
    x = 603.51

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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.