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Finding the Fourth Proportional to 351.12, 484.21 and 240.56

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Solution

The fourth proportional to 351.12, 484.21 and 240.56 is: 331.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.12 : 484.21 = 240.56 : x
  2. Step 2: Convert to fraction form
    351.12/484.21 = 240.56/x
  3. Step 3: Cross multiply
    351.12x = 484.21 × 240.56
  4. Step 4: Simplify right side
    351.12x = 116,477.93
  5. Step 5: Solve for x
    x = 116,477.93/351.12
  6. Step 6: Final answer
    x = 331.73

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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.