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Finding the Fourth Proportional to 835.29, 1,252.91 and 396.86

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Solution

The fourth proportional to 835.29, 1,252.91 and 396.86 is: 595.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    835.29 : 1,252.91 = 396.86 : x
  2. Step 2: Convert to fraction form
    835.29/1,252.91 = 396.86/x
  3. Step 3: Cross multiply
    835.29x = 1,252.91 × 396.86
  4. Step 4: Simplify right side
    835.29x = 497,225.68
  5. Step 5: Solve for x
    x = 497,225.68/835.29
  6. Step 6: Final answer
    x = 595.27

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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.