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Finding the Fourth Proportional to 983.01, 1,474.53 and 791.85

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Solution

The fourth proportional to 983.01, 1,474.53 and 791.85 is: 1,187.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    983.01 : 1,474.53 = 791.85 : x
  2. Step 2: Convert to fraction form
    983.01/1,474.53 = 791.85/x
  3. Step 3: Cross multiply
    983.01x = 1,474.53 × 791.85
  4. Step 4: Simplify right side
    983.01x = 1,167,606.58
  5. Step 5: Solve for x
    x = 1,167,606.58/983.01
  6. Step 6: Final answer
    x = 1,187.79

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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.