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Finding the Fourth Proportional to 400.01, 600.20 and 156.60

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Solution

The fourth proportional to 400.01, 600.20 and 156.60 is: 234.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.01 : 600.20 = 156.60 : x
  2. Step 2: Convert to fraction form
    400.01/600.20 = 156.60/x
  3. Step 3: Cross multiply
    400.01x = 600.20 × 156.60
  4. Step 4: Simplify right side
    400.01x = 93,990.54
  5. Step 5: Solve for x
    x = 93,990.54/400.01
  6. Step 6: Final answer
    x = 234.97

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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.