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Finding the Fourth Proportional to 571.13, 788.17 and 322.43

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Solution

The fourth proportional to 571.13, 788.17 and 322.43 is: 444.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.13 : 788.17 = 322.43 : x
  2. Step 2: Convert to fraction form
    571.13/788.17 = 322.43/x
  3. Step 3: Cross multiply
    571.13x = 788.17 × 322.43
  4. Step 4: Simplify right side
    571.13x = 254,130.82
  5. Step 5: Solve for x
    x = 254,130.82/571.13
  6. Step 6: Final answer
    x = 444.97

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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.