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Finding the Fourth Proportional to 574.06, 791.49 and 543.28

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Solution

The fourth proportional to 574.06, 791.49 and 543.28 is: 749.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.06 : 791.49 = 543.28 : x
  2. Step 2: Convert to fraction form
    574.06/791.49 = 543.28/x
  3. Step 3: Cross multiply
    574.06x = 791.49 × 543.28
  4. Step 4: Simplify right side
    574.06x = 430,000.69
  5. Step 5: Solve for x
    x = 430,000.69/574.06
  6. Step 6: Final answer
    x = 749.05

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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.