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Finding the Fourth Proportional to 1,197.42, 1,793.85 and 580.26

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Solution

The fourth proportional to 1,197.42, 1,793.85 and 580.26 is: 869.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,197.42 : 1,793.85 = 580.26 : x
  2. Step 2: Convert to fraction form
    1,197.42/1,793.85 = 580.26/x
  3. Step 3: Cross multiply
    1,197.42x = 1,793.85 × 580.26
  4. Step 4: Simplify right side
    1,197.42x = 1,040,899.40
  5. Step 5: Solve for x
    x = 1,040,899.40/1,197.42
  6. Step 6: Final answer
    x = 869.29

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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.