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Finding the Fourth Proportional to 298.89, 413.04 and 225.08

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Solution

The fourth proportional to 298.89, 413.04 and 225.08 is: 311.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.89 : 413.04 = 225.08 : x
  2. Step 2: Convert to fraction form
    298.89/413.04 = 225.08/x
  3. Step 3: Cross multiply
    298.89x = 413.04 × 225.08
  4. Step 4: Simplify right side
    298.89x = 92,968.92
  5. Step 5: Solve for x
    x = 92,968.92/298.89
  6. Step 6: Final answer
    x = 311.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.