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Finding the Fourth Proportional to 863.44, 1,191.52 and 738.96

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Solution

The fourth proportional to 863.44, 1,191.52 and 738.96 is: 1,019.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    863.44 : 1,191.52 = 738.96 : x
  2. Step 2: Convert to fraction form
    863.44/1,191.52 = 738.96/x
  3. Step 3: Cross multiply
    863.44x = 1,191.52 × 738.96
  4. Step 4: Simplify right side
    863.44x = 880,485.62
  5. Step 5: Solve for x
    x = 880,485.62/863.44
  6. Step 6: Final answer
    x = 1,019.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.