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Finding the Fourth Proportional to 835.37, 1,251.86 and 469.39

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Solution

The fourth proportional to 835.37, 1,251.86 and 469.39 is: 703.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    835.37 : 1,251.86 = 469.39 : x
  2. Step 2: Convert to fraction form
    835.37/1,251.86 = 469.39/x
  3. Step 3: Cross multiply
    835.37x = 1,251.86 × 469.39
  4. Step 4: Simplify right side
    835.37x = 587,614.87
  5. Step 5: Solve for x
    x = 587,614.87/835.37
  6. Step 6: Final answer
    x = 703.42

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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.