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Finding the Fourth Proportional to 571.92, 789.18 and 335.80

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Solution

The fourth proportional to 571.92, 789.18 and 335.80 is: 463.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.92 : 789.18 = 335.80 : x
  2. Step 2: Convert to fraction form
    571.92/789.18 = 335.80/x
  3. Step 3: Cross multiply
    571.92x = 789.18 × 335.80
  4. Step 4: Simplify right side
    571.92x = 265,006.64
  5. Step 5: Solve for x
    x = 265,006.64/571.92
  6. Step 6: Final answer
    x = 463.36

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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.