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Finding the Fourth Proportional to 849.29, 1,273.05 and 574.72

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Solution

The fourth proportional to 849.29, 1,273.05 and 574.72 is: 861.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    849.29 : 1,273.05 = 574.72 : x
  2. Step 2: Convert to fraction form
    849.29/1,273.05 = 574.72/x
  3. Step 3: Cross multiply
    849.29x = 1,273.05 × 574.72
  4. Step 4: Simplify right side
    849.29x = 731,644.11
  5. Step 5: Solve for x
    x = 731,644.11/849.29
  6. Step 6: Final answer
    x = 861.48

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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.