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Finding the Fourth Proportional to 483.87, 726.02 and 191.46

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Solution

The fourth proportional to 483.87, 726.02 and 191.46 is: 287.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.87 : 726.02 = 191.46 : x
  2. Step 2: Convert to fraction form
    483.87/726.02 = 191.46/x
  3. Step 3: Cross multiply
    483.87x = 726.02 × 191.46
  4. Step 4: Simplify right side
    483.87x = 139,002.83
  5. Step 5: Solve for x
    x = 139,002.83/483.87
  6. Step 6: Final answer
    x = 287.27

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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.