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Finding the Fourth Proportional to 1,353.42, 2,028.60 and 531.54

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Solution

The fourth proportional to 1,353.42, 2,028.60 and 531.54 is: 796.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353.42 : 2,028.60 = 531.54 : x
  2. Step 2: Convert to fraction form
    1,353.42/2,028.60 = 531.54/x
  3. Step 3: Cross multiply
    1,353.42x = 2,028.60 × 531.54
  4. Step 4: Simplify right side
    1,353.42x = 1,078,282.04
  5. Step 5: Solve for x
    x = 1,078,282.04/1,353.42
  6. Step 6: Final answer
    x = 796.71

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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.