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Finding the Fourth Proportional to 1,197.57, 1,797.86 and 923.83

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Solution

The fourth proportional to 1,197.57, 1,797.86 and 923.83 is: 1,386.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,197.57 : 1,797.86 = 923.83 : x
  2. Step 2: Convert to fraction form
    1,197.57/1,797.86 = 923.83/x
  3. Step 3: Cross multiply
    1,197.57x = 1,797.86 × 923.83
  4. Step 4: Simplify right side
    1,197.57x = 1,660,917.00
  5. Step 5: Solve for x
    x = 1,660,917.00/1,197.57
  6. Step 6: Final answer
    x = 1,386.91

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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.