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Finding the Fourth Proportional to 571.72, 789.13 and 335.71

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Solution

The fourth proportional to 571.72, 789.13 and 335.71 is: 463.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.72 : 789.13 = 335.71 : x
  2. Step 2: Convert to fraction form
    571.72/789.13 = 335.71/x
  3. Step 3: Cross multiply
    571.72x = 789.13 × 335.71
  4. Step 4: Simplify right side
    571.72x = 264,918.83
  5. Step 5: Solve for x
    x = 264,918.83/571.72
  6. Step 6: Final answer
    x = 463.37

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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.