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Finding the Fourth Proportional to 576, 863.91 and 251.46

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Solution

The fourth proportional to 576, 863.91 and 251.46 is: 377.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    576 : 863.91 = 251.46 : x
  2. Step 2: Convert to fraction form
    576/863.91 = 251.46/x
  3. Step 3: Cross multiply
    576x = 863.91 × 251.46
  4. Step 4: Simplify right side
    576x = 217,238.81
  5. Step 5: Solve for x
    x = 217,238.81/576
  6. Step 6: Final answer
    x = 377.15

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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.