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Finding the Fourth Proportional to 351.72, 484.21 and 334.40

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Solution

The fourth proportional to 351.72, 484.21 and 334.40 is: 460.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.72 : 484.21 = 334.40 : x
  2. Step 2: Convert to fraction form
    351.72/484.21 = 334.40/x
  3. Step 3: Cross multiply
    351.72x = 484.21 × 334.40
  4. Step 4: Simplify right side
    351.72x = 161,919.82
  5. Step 5: Solve for x
    x = 161,919.82/351.72
  6. Step 6: Final answer
    x = 460.37

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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.