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Finding the Fourth Proportional to 262.90, 362.19 and 223.57

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Solution

The fourth proportional to 262.90, 362.19 and 223.57 is: 308.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.90 : 362.19 = 223.57 : x
  2. Step 2: Convert to fraction form
    262.90/362.19 = 223.57/x
  3. Step 3: Cross multiply
    262.90x = 362.19 × 223.57
  4. Step 4: Simplify right side
    262.90x = 80,974.82
  5. Step 5: Solve for x
    x = 80,974.82/262.90
  6. Step 6: Final answer
    x = 308.01

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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.