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Finding the Fourth Proportional to 571.38, 857.97 and 355.92

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Solution

The fourth proportional to 571.38, 857.97 and 355.92 is: 534.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.38 : 857.97 = 355.92 : x
  2. Step 2: Convert to fraction form
    571.38/857.97 = 355.92/x
  3. Step 3: Cross multiply
    571.38x = 857.97 × 355.92
  4. Step 4: Simplify right side
    571.38x = 305,368.68
  5. Step 5: Solve for x
    x = 305,368.68/571.38
  6. Step 6: Final answer
    x = 534.44

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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.