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Finding the Fourth Proportional to 833.91, 1,150.92 and 479.90

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Solution

The fourth proportional to 833.91, 1,150.92 and 479.90 is: 662.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    833.91 : 1,150.92 = 479.90 : x
  2. Step 2: Convert to fraction form
    833.91/1,150.92 = 479.90/x
  3. Step 3: Cross multiply
    833.91x = 1,150.92 × 479.90
  4. Step 4: Simplify right side
    833.91x = 552,320.75
  5. Step 5: Solve for x
    x = 552,320.75/833.91
  6. Step 6: Final answer
    x = 662.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.