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Finding the Fourth Proportional to 218.14, 300.44 and 203.02

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Solution

The fourth proportional to 218.14, 300.44 and 203.02 is: 279.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    218.14 : 300.44 = 203.02 : x
  2. Step 2: Convert to fraction form
    218.14/300.44 = 203.02/x
  3. Step 3: Cross multiply
    218.14x = 300.44 × 203.02
  4. Step 4: Simplify right side
    218.14x = 60,995.33
  5. Step 5: Solve for x
    x = 60,995.33/218.14
  6. Step 6: Final answer
    x = 279.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.