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Finding the Fourth Proportional to 571.71, 788.96 and 323.09

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Solution

The fourth proportional to 571.71, 788.96 and 323.09 is: 445.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.71 : 788.96 = 323.09 : x
  2. Step 2: Convert to fraction form
    571.71/788.96 = 323.09/x
  3. Step 3: Cross multiply
    571.71x = 788.96 × 323.09
  4. Step 4: Simplify right side
    571.71x = 254,903.47
  5. Step 5: Solve for x
    x = 254,903.47/571.71
  6. Step 6: Final answer
    x = 445.86

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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.