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Finding the Fourth Proportional to 300.48, 447.71 and 268.14

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Solution

The fourth proportional to 300.48, 447.71 and 268.14 is: 399.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.48 : 447.71 = 268.14 : x
  2. Step 2: Convert to fraction form
    300.48/447.71 = 268.14/x
  3. Step 3: Cross multiply
    300.48x = 447.71 × 268.14
  4. Step 4: Simplify right side
    300.48x = 120,048.96
  5. Step 5: Solve for x
    x = 120,048.96/300.48
  6. Step 6: Final answer
    x = 399.52

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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.