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Finding the Fourth Proportional to 571.52, 857.34 and 186.84

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Solution

The fourth proportional to 571.52, 857.34 and 186.84 is: 280.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.52 : 857.34 = 186.84 : x
  2. Step 2: Convert to fraction form
    571.52/857.34 = 186.84/x
  3. Step 3: Cross multiply
    571.52x = 857.34 × 186.84
  4. Step 4: Simplify right side
    571.52x = 160,185.41
  5. Step 5: Solve for x
    x = 160,185.41/571.52
  6. Step 6: Final answer
    x = 280.28

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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.