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Finding the Fourth Proportional to 833.86, 1,150.83 and 612.91

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Solution

The fourth proportional to 833.86, 1,150.83 and 612.91 is: 845.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    833.86 : 1,150.83 = 612.91 : x
  2. Step 2: Convert to fraction form
    833.86/1,150.83 = 612.91/x
  3. Step 3: Cross multiply
    833.86x = 1,150.83 × 612.91
  4. Step 4: Simplify right side
    833.86x = 705,355.22
  5. Step 5: Solve for x
    x = 705,355.22/833.86
  6. Step 6: Final answer
    x = 845.89

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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.