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Finding the Fourth Proportional to 571.47, 789.09 and 350.55

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Solution

The fourth proportional to 571.47, 789.09 and 350.55 is: 484.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.47 : 789.09 = 350.55 : x
  2. Step 2: Convert to fraction form
    571.47/789.09 = 350.55/x
  3. Step 3: Cross multiply
    571.47x = 789.09 × 350.55
  4. Step 4: Simplify right side
    571.47x = 276,615.50
  5. Step 5: Solve for x
    x = 276,615.50/571.47
  6. Step 6: Final answer
    x = 484.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.