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Finding the Fourth Proportional to 300.96, 415.35 and 296.10

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Solution

The fourth proportional to 300.96, 415.35 and 296.10 is: 408.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.96 : 415.35 = 296.10 : x
  2. Step 2: Convert to fraction form
    300.96/415.35 = 296.10/x
  3. Step 3: Cross multiply
    300.96x = 415.35 × 296.10
  4. Step 4: Simplify right side
    300.96x = 122,985.14
  5. Step 5: Solve for x
    x = 122,985.14/300.96
  6. Step 6: Final answer
    x = 408.64

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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.