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Finding the Fourth Proportional to 579.21, 868.17 and 374.16

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Solution

The fourth proportional to 579.21, 868.17 and 374.16 is: 560.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.21 : 868.17 = 374.16 : x
  2. Step 2: Convert to fraction form
    579.21/868.17 = 374.16/x
  3. Step 3: Cross multiply
    579.21x = 868.17 × 374.16
  4. Step 4: Simplify right side
    579.21x = 324,834.49
  5. Step 5: Solve for x
    x = 324,834.49/579.21
  6. Step 6: Final answer
    x = 560.82

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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.