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Finding the Fourth Proportional to 574.94, 862.83 and 209.76

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Solution

The fourth proportional to 574.94, 862.83 and 209.76 is: 314.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.94 : 862.83 = 209.76 : x
  2. Step 2: Convert to fraction form
    574.94/862.83 = 209.76/x
  3. Step 3: Cross multiply
    574.94x = 862.83 × 209.76
  4. Step 4: Simplify right side
    574.94x = 180,987.22
  5. Step 5: Solve for x
    x = 180,987.22/574.94
  6. Step 6: Final answer
    x = 314.79

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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.