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Finding the Fourth Proportional to 366.89, 506.09 and 261.81

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Solution

The fourth proportional to 366.89, 506.09 and 261.81 is: 361.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    366.89 : 506.09 = 261.81 : x
  2. Step 2: Convert to fraction form
    366.89/506.09 = 261.81/x
  3. Step 3: Cross multiply
    366.89x = 506.09 × 261.81
  4. Step 4: Simplify right side
    366.89x = 132,500.02
  5. Step 5: Solve for x
    x = 132,500.02/366.89
  6. Step 6: Final answer
    x = 361.14

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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.