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Finding the Fourth Proportional to 835.12, 1,252.77 and 314.96

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Solution

The fourth proportional to 835.12, 1,252.77 and 314.96 is: 472.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    835.12 : 1,252.77 = 314.96 : x
  2. Step 2: Convert to fraction form
    835.12/1,252.77 = 314.96/x
  3. Step 3: Cross multiply
    835.12x = 1,252.77 × 314.96
  4. Step 4: Simplify right side
    835.12x = 394,572.44
  5. Step 5: Solve for x
    x = 394,572.44/835.12
  6. Step 6: Final answer
    x = 472.47

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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.