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Finding the Fourth Proportional to 571.33, 788.46 and 322.75

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Solution

The fourth proportional to 571.33, 788.46 and 322.75 is: 445.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.33 : 788.46 = 322.75 : x
  2. Step 2: Convert to fraction form
    571.33/788.46 = 322.75/x
  3. Step 3: Cross multiply
    571.33x = 788.46 × 322.75
  4. Step 4: Simplify right side
    571.33x = 254,475.47
  5. Step 5: Solve for x
    x = 254,475.47/571.33
  6. Step 6: Final answer
    x = 445.41

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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.