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Finding the Fourth Proportional to 578.89, 868.53 and 194.14

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Solution

The fourth proportional to 578.89, 868.53 and 194.14 is: 291.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.89 : 868.53 = 194.14 : x
  2. Step 2: Convert to fraction form
    578.89/868.53 = 194.14/x
  3. Step 3: Cross multiply
    578.89x = 868.53 × 194.14
  4. Step 4: Simplify right side
    578.89x = 168,616.41
  5. Step 5: Solve for x
    x = 168,616.41/578.89
  6. Step 6: Final answer
    x = 291.28

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.