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Finding the Fourth Proportional to 1,589.73, 2,382.49 and 766.50

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Solution

The fourth proportional to 1,589.73, 2,382.49 and 766.50 is: 1,148.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,589.73 : 2,382.49 = 766.50 : x
  2. Step 2: Convert to fraction form
    1,589.73/2,382.49 = 766.50/x
  3. Step 3: Cross multiply
    1,589.73x = 2,382.49 × 766.50
  4. Step 4: Simplify right side
    1,589.73x = 1,826,178.59
  5. Step 5: Solve for x
    x = 1,826,178.59/1,589.73
  6. Step 6: Final answer
    x = 1,148.74

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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.