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Finding the Fourth Proportional to 262.11, 361.08 and 220.89

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Solution

The fourth proportional to 262.11, 361.08 and 220.89 is: 304.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.11 : 361.08 = 220.89 : x
  2. Step 2: Convert to fraction form
    262.11/361.08 = 220.89/x
  3. Step 3: Cross multiply
    262.11x = 361.08 × 220.89
  4. Step 4: Simplify right side
    262.11x = 79,758.96
  5. Step 5: Solve for x
    x = 79,758.96/262.11
  6. Step 6: Final answer
    x = 304.30

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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.