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Finding the Fourth Proportional to 834.00, 1,249.32 and 394.57

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Solution

The fourth proportional to 834.00, 1,249.32 and 394.57 is: 591.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    834.00 : 1,249.32 = 394.57 : x
  2. Step 2: Convert to fraction form
    834.00/1,249.32 = 394.57/x
  3. Step 3: Cross multiply
    834.00x = 1,249.32 × 394.57
  4. Step 4: Simplify right side
    834.00x = 492,947.23
  5. Step 5: Solve for x
    x = 492,947.23/834.00
  6. Step 6: Final answer
    x = 591.07

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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.