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Finding the Fourth Proportional to 574.69, 862.05 and 209.50

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Solution

The fourth proportional to 574.69, 862.05 and 209.50 is: 314.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.69 : 862.05 = 209.50 : x
  2. Step 2: Convert to fraction form
    574.69/862.05 = 209.50/x
  3. Step 3: Cross multiply
    574.69x = 862.05 × 209.50
  4. Step 4: Simplify right side
    574.69x = 180,599.48
  5. Step 5: Solve for x
    x = 180,599.48/574.69
  6. Step 6: Final answer
    x = 314.26

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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.