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Finding the Fourth Proportional to 579.41, 869.12 and 194.66

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Solution

The fourth proportional to 579.41, 869.12 and 194.66 is: 291.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.41 : 869.12 = 194.66 : x
  2. Step 2: Convert to fraction form
    579.41/869.12 = 194.66/x
  3. Step 3: Cross multiply
    579.41x = 869.12 × 194.66
  4. Step 4: Simplify right side
    579.41x = 169,182.90
  5. Step 5: Solve for x
    x = 169,182.90/579.41
  6. Step 6: Final answer
    x = 291.99

Related Problems

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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.