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Finding the Fourth Proportional to 240.05, 361.58 and 218.52

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Solution

The fourth proportional to 240.05, 361.58 and 218.52 is: 329.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.05 : 361.58 = 218.52 : x
  2. Step 2: Convert to fraction form
    240.05/361.58 = 218.52/x
  3. Step 3: Cross multiply
    240.05x = 361.58 × 218.52
  4. Step 4: Simplify right side
    240.05x = 79,011.56
  5. Step 5: Solve for x
    x = 79,011.56/240.05
  6. Step 6: Final answer
    x = 329.15

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.