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Finding the Fourth Proportional to 300.66, 415.62 and 238.92

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Solution

The fourth proportional to 300.66, 415.62 and 238.92 is: 330.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.66 : 415.62 = 238.92 : x
  2. Step 2: Convert to fraction form
    300.66/415.62 = 238.92/x
  3. Step 3: Cross multiply
    300.66x = 415.62 × 238.92
  4. Step 4: Simplify right side
    300.66x = 99,299.93
  5. Step 5: Solve for x
    x = 99,299.93/300.66
  6. Step 6: Final answer
    x = 330.27

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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.