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Finding the Fourth Proportional to 484.37, 726.04 and 191.79

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Solution

The fourth proportional to 484.37, 726.04 and 191.79 is: 287.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.37 : 726.04 = 191.79 : x
  2. Step 2: Convert to fraction form
    484.37/726.04 = 191.79/x
  3. Step 3: Cross multiply
    484.37x = 726.04 × 191.79
  4. Step 4: Simplify right side
    484.37x = 139,246.73
  5. Step 5: Solve for x
    x = 139,246.73/484.37
  6. Step 6: Final answer
    x = 287.48

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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.