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Finding the Fourth Proportional to 574.00, 860.99 and 208.78

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Solution

The fourth proportional to 574.00, 860.99 and 208.78 is: 313.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.00 : 860.99 = 208.78 : x
  2. Step 2: Convert to fraction form
    574.00/860.99 = 208.78/x
  3. Step 3: Cross multiply
    574.00x = 860.99 × 208.78
  4. Step 4: Simplify right side
    574.00x = 179,757.49
  5. Step 5: Solve for x
    x = 179,757.49/574.00
  6. Step 6: Final answer
    x = 313.17

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Similar ratio
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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.