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Finding the Fourth Proportional to 214.44, 321.48 and 137.43

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Solution

The fourth proportional to 214.44, 321.48 and 137.43 is: 206.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    214.44 : 321.48 = 137.43 : x
  2. Step 2: Convert to fraction form
    214.44/321.48 = 137.43/x
  3. Step 3: Cross multiply
    214.44x = 321.48 × 137.43
  4. Step 4: Simplify right side
    214.44x = 44,181.00
  5. Step 5: Solve for x
    x = 44,181.00/214.44
  6. Step 6: Final answer
    x = 206.03

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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.