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Finding the Fourth Proportional to 577.11, 796.40 and 328.43

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Solution

The fourth proportional to 577.11, 796.40 and 328.43 is: 453.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    577.11 : 796.40 = 328.43 : x
  2. Step 2: Convert to fraction form
    577.11/796.40 = 328.43/x
  3. Step 3: Cross multiply
    577.11x = 796.40 × 328.43
  4. Step 4: Simplify right side
    577.11x = 261,561.65
  5. Step 5: Solve for x
    x = 261,561.65/577.11
  6. Step 6: Final answer
    x = 453.23

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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.