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Finding the Fourth Proportional to 834.62, 1,145.61 and 739.28

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Solution

The fourth proportional to 834.62, 1,145.61 and 739.28 is: 1,014.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    834.62 : 1,145.61 = 739.28 : x
  2. Step 2: Convert to fraction form
    834.62/1,145.61 = 739.28/x
  3. Step 3: Cross multiply
    834.62x = 1,145.61 × 739.28
  4. Step 4: Simplify right side
    834.62x = 846,922.86
  5. Step 5: Solve for x
    x = 846,922.86/834.62
  6. Step 6: Final answer
    x = 1,014.74

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.