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Finding the Fourth Proportional to 301.62, 451.72 and 191.54

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Solution

The fourth proportional to 301.62, 451.72 and 191.54 is: 286.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    301.62 : 451.72 = 191.54 : x
  2. Step 2: Convert to fraction form
    301.62/451.72 = 191.54/x
  3. Step 3: Cross multiply
    301.62x = 451.72 × 191.54
  4. Step 4: Simplify right side
    301.62x = 86,523.82
  5. Step 5: Solve for x
    x = 86,523.82/301.62
  6. Step 6: Final answer
    x = 286.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.