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Finding the Fourth Proportional to 579.09, 868.45 and 194.25

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Solution

The fourth proportional to 579.09, 868.45 and 194.25 is: 291.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.09 : 868.45 = 194.25 : x
  2. Step 2: Convert to fraction form
    579.09/868.45 = 194.25/x
  3. Step 3: Cross multiply
    579.09x = 868.45 × 194.25
  4. Step 4: Simplify right side
    579.09x = 168,695.44
  5. Step 5: Solve for x
    x = 168,695.44/579.09
  6. Step 6: Final answer
    x = 291.31

Related Problems

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Double scale
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Similar ratio
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1.5x scale

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.