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Finding the Fourth Proportional to 863.66, 1,295.49 and 247.35

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Solution

The fourth proportional to 863.66, 1,295.49 and 247.35 is: 371.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    863.66 : 1,295.49 = 247.35 : x
  2. Step 2: Convert to fraction form
    863.66/1,295.49 = 247.35/x
  3. Step 3: Cross multiply
    863.66x = 1,295.49 × 247.35
  4. Step 4: Simplify right side
    863.66x = 320,445.24
  5. Step 5: Solve for x
    x = 320,445.24/863.66
  6. Step 6: Final answer
    x = 371.03

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Double scale
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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.