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Finding the Fourth Proportional to 298.64, 447.32 and 275.88

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Solution

The fourth proportional to 298.64, 447.32 and 275.88 is: 413.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.64 : 447.32 = 275.88 : x
  2. Step 2: Convert to fraction form
    298.64/447.32 = 275.88/x
  3. Step 3: Cross multiply
    298.64x = 447.32 × 275.88
  4. Step 4: Simplify right side
    298.64x = 123,406.64
  5. Step 5: Solve for x
    x = 123,406.64/298.64
  6. Step 6: Final answer
    x = 413.23

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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.