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Finding the Fourth Proportional to 400.40, 599.70 and 254.60

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Solution

The fourth proportional to 400.40, 599.70 and 254.60 is: 381.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.40 : 599.70 = 254.60 : x
  2. Step 2: Convert to fraction form
    400.40/599.70 = 254.60/x
  3. Step 3: Cross multiply
    400.40x = 599.70 × 254.60
  4. Step 4: Simplify right side
    400.40x = 152,683.62
  5. Step 5: Solve for x
    x = 152,683.62/400.40
  6. Step 6: Final answer
    x = 381.33

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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.