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Finding the Fourth Proportional to 573.76, 791.86 and 352.66

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Solution

The fourth proportional to 573.76, 791.86 and 352.66 is: 486.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.76 : 791.86 = 352.66 : x
  2. Step 2: Convert to fraction form
    573.76/791.86 = 352.66/x
  3. Step 3: Cross multiply
    573.76x = 791.86 × 352.66
  4. Step 4: Simplify right side
    573.76x = 279,257.35
  5. Step 5: Solve for x
    x = 279,257.35/573.76
  6. Step 6: Final answer
    x = 486.71

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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.