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Finding the Fourth Proportional to 262.55, 362.33 and 218.81

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Solution

The fourth proportional to 262.55, 362.33 and 218.81 is: 301.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.55 : 362.33 = 218.81 : x
  2. Step 2: Convert to fraction form
    262.55/362.33 = 218.81/x
  3. Step 3: Cross multiply
    262.55x = 362.33 × 218.81
  4. Step 4: Simplify right side
    262.55x = 79,278.52
  5. Step 5: Solve for x
    x = 79,278.52/262.55
  6. Step 6: Final answer
    x = 301.96

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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.