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Finding the Fourth Proportional to 1,197.56, 1,793.10 and 812.04

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Solution

The fourth proportional to 1,197.56, 1,793.10 and 812.04 is: 1,215.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,197.56 : 1,793.10 = 812.04 : x
  2. Step 2: Convert to fraction form
    1,197.56/1,793.10 = 812.04/x
  3. Step 3: Cross multiply
    1,197.56x = 1,793.10 × 812.04
  4. Step 4: Simplify right side
    1,197.56x = 1,456,068.92
  5. Step 5: Solve for x
    x = 1,456,068.92/1,197.56
  6. Step 6: Final answer
    x = 1,215.86

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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.