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Finding the Fourth Proportional to 845.63, 1,166.57 and 550.79

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Solution

The fourth proportional to 845.63, 1,166.57 and 550.79 is: 759.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    845.63 : 1,166.57 = 550.79 : x
  2. Step 2: Convert to fraction form
    845.63/1,166.57 = 550.79/x
  3. Step 3: Cross multiply
    845.63x = 1,166.57 × 550.79
  4. Step 4: Simplify right side
    845.63x = 642,535.09
  5. Step 5: Solve for x
    x = 642,535.09/845.63
  6. Step 6: Final answer
    x = 759.83

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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.