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Finding the Fourth Proportional to 1,177.94, 1,766.89 and 356.23

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Solution

The fourth proportional to 1,177.94, 1,766.89 and 356.23 is: 534.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,177.94 : 1,766.89 = 356.23 : x
  2. Step 2: Convert to fraction form
    1,177.94/1,766.89 = 356.23/x
  3. Step 3: Cross multiply
    1,177.94x = 1,766.89 × 356.23
  4. Step 4: Simplify right side
    1,177.94x = 629,408.61
  5. Step 5: Solve for x
    x = 629,408.61/1,177.94
  6. Step 6: Final answer
    x = 534.33

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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.