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Finding the Fourth Proportional to 218.15, 300.62 and 204.11

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Solution

The fourth proportional to 218.15, 300.62 and 204.11 is: 281.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    218.15 : 300.62 = 204.11 : x
  2. Step 2: Convert to fraction form
    218.15/300.62 = 204.11/x
  3. Step 3: Cross multiply
    218.15x = 300.62 × 204.11
  4. Step 4: Simplify right side
    218.15x = 61,358.53
  5. Step 5: Solve for x
    x = 61,358.53/218.15
  6. Step 6: Final answer
    x = 281.27

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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.