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Finding the Fourth Proportional to 240.90, 361.08 and 186.66

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Solution

The fourth proportional to 240.90, 361.08 and 186.66 is: 279.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.90 : 361.08 = 186.66 : x
  2. Step 2: Convert to fraction form
    240.90/361.08 = 186.66/x
  3. Step 3: Cross multiply
    240.90x = 361.08 × 186.66
  4. Step 4: Simplify right side
    240.90x = 67,399.19
  5. Step 5: Solve for x
    x = 67,399.19/240.90
  6. Step 6: Final answer
    x = 279.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.