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Finding the Fourth Proportional to 1,196.78, 1,793.07 and 886.95

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Solution

The fourth proportional to 1,196.78, 1,793.07 and 886.95 is: 1,328.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,196.78 : 1,793.07 = 886.95 : x
  2. Step 2: Convert to fraction form
    1,196.78/1,793.07 = 886.95/x
  3. Step 3: Cross multiply
    1,196.78x = 1,793.07 × 886.95
  4. Step 4: Simplify right side
    1,196.78x = 1,590,363.44
  5. Step 5: Solve for x
    x = 1,590,363.44/1,196.78
  6. Step 6: Final answer
    x = 1,328.87

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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.