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Finding the Fourth Proportional to 578.70, 868.04 and 188.73

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Solution

The fourth proportional to 578.70, 868.04 and 188.73 is: 283.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.70 : 868.04 = 188.73 : x
  2. Step 2: Convert to fraction form
    578.70/868.04 = 188.73/x
  3. Step 3: Cross multiply
    578.70x = 868.04 × 188.73
  4. Step 4: Simplify right side
    578.70x = 163,824.25
  5. Step 5: Solve for x
    x = 163,824.25/578.70
  6. Step 6: Final answer
    x = 283.09

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Double scale
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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.