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Finding the Fourth Proportional to 570.82, 855.86 and 200.54

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Solution

The fourth proportional to 570.82, 855.86 and 200.54 is: 300.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.82 : 855.86 = 200.54 : x
  2. Step 2: Convert to fraction form
    570.82/855.86 = 200.54/x
  3. Step 3: Cross multiply
    570.82x = 855.86 × 200.54
  4. Step 4: Simplify right side
    570.82x = 171,634.16
  5. Step 5: Solve for x
    x = 171,634.16/570.82
  6. Step 6: Final answer
    x = 300.68

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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.