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Finding the Fourth Proportional to 863.03, 1,293.83 and 739.16

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Solution

The fourth proportional to 863.03, 1,293.83 and 739.16 is: 1,108.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    863.03 : 1,293.83 = 739.16 : x
  2. Step 2: Convert to fraction form
    863.03/1,293.83 = 739.16/x
  3. Step 3: Cross multiply
    863.03x = 1,293.83 × 739.16
  4. Step 4: Simplify right side
    863.03x = 956,340.91
  5. Step 5: Solve for x
    x = 956,340.91/863.03
  6. Step 6: Final answer
    x = 1,108.12

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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.