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Finding the Fourth Proportional to 578.99, 868.46 and 168.12

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Solution

The fourth proportional to 578.99, 868.46 and 168.12 is: 252.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.99 : 868.46 = 168.12 : x
  2. Step 2: Convert to fraction form
    578.99/868.46 = 168.12/x
  3. Step 3: Cross multiply
    578.99x = 868.46 × 168.12
  4. Step 4: Simplify right side
    578.99x = 146,005.50
  5. Step 5: Solve for x
    x = 146,005.50/578.99
  6. Step 6: Final answer
    x = 252.17

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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.