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Finding the Fourth Proportional to 1,194.90, 1,791.42 and 545.46

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Solution

The fourth proportional to 1,194.90, 1,791.42 and 545.46 is: 817.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,194.90 : 1,791.42 = 545.46 : x
  2. Step 2: Convert to fraction form
    1,194.90/1,791.42 = 545.46/x
  3. Step 3: Cross multiply
    1,194.90x = 1,791.42 × 545.46
  4. Step 4: Simplify right side
    1,194.90x = 977,147.95
  5. Step 5: Solve for x
    x = 977,147.95/1,194.90
  6. Step 6: Final answer
    x = 817.77

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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.