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Finding the Fourth Proportional to 579.09, 868.60 and 194.34

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Solution

The fourth proportional to 579.09, 868.60 and 194.34 is: 291.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.09 : 868.60 = 194.34 : x
  2. Step 2: Convert to fraction form
    579.09/868.60 = 194.34/x
  3. Step 3: Cross multiply
    579.09x = 868.60 × 194.34
  4. Step 4: Simplify right side
    579.09x = 168,803.72
  5. Step 5: Solve for x
    x = 168,803.72/579.09
  6. Step 6: Final answer
    x = 291.50

Related Problems

Find fourth proportional to 289.55, 434.30 and 97.17
Half scale
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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.