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Finding the Fourth Proportional to 399.96, 600.03 and 143.46

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Solution

The fourth proportional to 399.96, 600.03 and 143.46 is: 215.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    399.96 : 600.03 = 143.46 : x
  2. Step 2: Convert to fraction form
    399.96/600.03 = 143.46/x
  3. Step 3: Cross multiply
    399.96x = 600.03 × 143.46
  4. Step 4: Simplify right side
    399.96x = 86,080.30
  5. Step 5: Solve for x
    x = 86,080.30/399.96
  6. Step 6: Final answer
    x = 215.22

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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.