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Finding the Fourth Proportional to 400, 600.18 and 229

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Solution

The fourth proportional to 400, 600.18 and 229 is: 343.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    400 : 600.18 = 229 : x
  2. Step 2: Convert to fraction form
    400/600.18 = 229/x
  3. Step 3: Cross multiply
    400x = 600.18 × 229
  4. Step 4: Simplify right side
    400x = 137,441.22
  5. Step 5: Solve for x
    x = 137,441.22/400
  6. Step 6: Final answer
    x = 343.60

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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.