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Finding the Fourth Proportional to 863.12, 1,295.12 and 376.18

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Solution

The fourth proportional to 863.12, 1,295.12 and 376.18 is: 564.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    863.12 : 1,295.12 = 376.18 : x
  2. Step 2: Convert to fraction form
    863.12/1,295.12 = 376.18/x
  3. Step 3: Cross multiply
    863.12x = 1,295.12 × 376.18
  4. Step 4: Simplify right side
    863.12x = 487,195.94
  5. Step 5: Solve for x
    x = 487,195.94/863.12
  6. Step 6: Final answer
    x = 564.46

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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.