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Finding the Fourth Proportional to 388.31, 581.67 and 241.58

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Solution

The fourth proportional to 388.31, 581.67 and 241.58 is: 361.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    388.31 : 581.67 = 241.58 : x
  2. Step 2: Convert to fraction form
    388.31/581.67 = 241.58/x
  3. Step 3: Cross multiply
    388.31x = 581.67 × 241.58
  4. Step 4: Simplify right side
    388.31x = 140,519.84
  5. Step 5: Solve for x
    x = 140,519.84/388.31
  6. Step 6: Final answer
    x = 361.88

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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.