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Finding the Fourth Proportional to 571.39, 857.12 and 181.38

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Solution

The fourth proportional to 571.39, 857.12 and 181.38 is: 272.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.39 : 857.12 = 181.38 : x
  2. Step 2: Convert to fraction form
    571.39/857.12 = 181.38/x
  3. Step 3: Cross multiply
    571.39x = 857.12 × 181.38
  4. Step 4: Simplify right side
    571.39x = 155,468.09
  5. Step 5: Solve for x
    x = 155,468.09/571.39
  6. Step 6: Final answer
    x = 272.09

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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.