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Finding the Fourth Proportional to 300.92, 415.28 and 190.35

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Solution

The fourth proportional to 300.92, 415.28 and 190.35 is: 262.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.92 : 415.28 = 190.35 : x
  2. Step 2: Convert to fraction form
    300.92/415.28 = 190.35/x
  3. Step 3: Cross multiply
    300.92x = 415.28 × 190.35
  4. Step 4: Simplify right side
    300.92x = 79,049.02
  5. Step 5: Solve for x
    x = 79,049.02/300.92
  6. Step 6: Final answer
    x = 262.70

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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.