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Finding the Fourth Proportional to 261.50, 361.31 and 183.11

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Solution

The fourth proportional to 261.50, 361.31 and 183.11 is: 252.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    261.50 : 361.31 = 183.11 : x
  2. Step 2: Convert to fraction form
    261.50/361.31 = 183.11/x
  3. Step 3: Cross multiply
    261.50x = 361.31 × 183.11
  4. Step 4: Simplify right side
    261.50x = 66,156.75
  5. Step 5: Solve for x
    x = 66,156.75/261.50
  6. Step 6: Final answer
    x = 252.99

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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.