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Finding the Fourth Proportional to 573.63, 791.87 and 553.11

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Solution

The fourth proportional to 573.63, 791.87 and 553.11 is: 763.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.63 : 791.87 = 553.11 : x
  2. Step 2: Convert to fraction form
    573.63/791.87 = 553.11/x
  3. Step 3: Cross multiply
    573.63x = 791.87 × 553.11
  4. Step 4: Simplify right side
    573.63x = 437,991.22
  5. Step 5: Solve for x
    x = 437,991.22/573.63
  6. Step 6: Final answer
    x = 763.54

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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.