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Finding the Fourth Proportional to 298.88, 448.32 and 168.81

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Solution

The fourth proportional to 298.88, 448.32 and 168.81 is: 253.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.88 : 448.32 = 168.81 : x
  2. Step 2: Convert to fraction form
    298.88/448.32 = 168.81/x
  3. Step 3: Cross multiply
    298.88x = 448.32 × 168.81
  4. Step 4: Simplify right side
    298.88x = 75,680.90
  5. Step 5: Solve for x
    x = 75,680.90/298.88
  6. Step 6: Final answer
    x = 253.22

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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.