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Finding the Fourth Proportional to 300.96, 415.80 and 296.64

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Solution

The fourth proportional to 300.96, 415.80 and 296.64 is: 409.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.96 : 415.80 = 296.64 : x
  2. Step 2: Convert to fraction form
    300.96/415.80 = 296.64/x
  3. Step 3: Cross multiply
    300.96x = 415.80 × 296.64
  4. Step 4: Simplify right side
    300.96x = 123,342.91
  5. Step 5: Solve for x
    x = 123,342.91/300.96
  6. Step 6: Final answer
    x = 409.83

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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.