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Finding the Fourth Proportional to 571.97, 857.34 and 327.98

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Solution

The fourth proportional to 571.97, 857.34 and 327.98 is: 491.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.97 : 857.34 = 327.98 : x
  2. Step 2: Convert to fraction form
    571.97/857.34 = 327.98/x
  3. Step 3: Cross multiply
    571.97x = 857.34 × 327.98
  4. Step 4: Simplify right side
    571.97x = 281,186.09
  5. Step 5: Solve for x
    x = 281,186.09/571.97
  6. Step 6: Final answer
    x = 491.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.