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Finding the Fourth Proportional to 1,160.12, 1,738.67 and 996.71

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Solution

The fourth proportional to 1,160.12, 1,738.67 and 996.71 is: 1,493.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,160.12 : 1,738.67 = 996.71 : x
  2. Step 2: Convert to fraction form
    1,160.12/1,738.67 = 996.71/x
  3. Step 3: Cross multiply
    1,160.12x = 1,738.67 × 996.71
  4. Step 4: Simplify right side
    1,160.12x = 1,732,936.10
  5. Step 5: Solve for x
    x = 1,732,936.10/1,160.12
  6. Step 6: Final answer
    x = 1,493.75

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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.