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Finding the Fourth Proportional to 1,200.73, 1,798.19 and 993.77

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Solution

The fourth proportional to 1,200.73, 1,798.19 and 993.77 is: 1,488.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,200.73 : 1,798.19 = 993.77 : x
  2. Step 2: Convert to fraction form
    1,200.73/1,798.19 = 993.77/x
  3. Step 3: Cross multiply
    1,200.73x = 1,798.19 × 993.77
  4. Step 4: Simplify right side
    1,200.73x = 1,786,990.53
  5. Step 5: Solve for x
    x = 1,786,990.53/1,200.73
  6. Step 6: Final answer
    x = 1,488.26

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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.