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Finding the Fourth Proportional to 833.82, 1,252.35 and 679.86

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Solution

The fourth proportional to 833.82, 1,252.35 and 679.86 is: 1,021.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    833.82 : 1,252.35 = 679.86 : x
  2. Step 2: Convert to fraction form
    833.82/1,252.35 = 679.86/x
  3. Step 3: Cross multiply
    833.82x = 1,252.35 × 679.86
  4. Step 4: Simplify right side
    833.82x = 851,422.67
  5. Step 5: Solve for x
    x = 851,422.67/833.82
  6. Step 6: Final answer
    x = 1,021.11

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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.