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Finding the Fourth Proportional to 571.38, 788.49 and 322.73

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Solution

The fourth proportional to 571.38, 788.49 and 322.73 is: 445.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.38 : 788.49 = 322.73 : x
  2. Step 2: Convert to fraction form
    571.38/788.49 = 322.73/x
  3. Step 3: Cross multiply
    571.38x = 788.49 × 322.73
  4. Step 4: Simplify right side
    571.38x = 254,465.44
  5. Step 5: Solve for x
    x = 254,465.44/571.38
  6. Step 6: Final answer
    x = 445.35

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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.