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Finding the Fourth Proportional to 351.12, 486.80 and 334.68

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Solution

The fourth proportional to 351.12, 486.80 and 334.68 is: 464.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.12 : 486.80 = 334.68 : x
  2. Step 2: Convert to fraction form
    351.12/486.80 = 334.68/x
  3. Step 3: Cross multiply
    351.12x = 486.80 × 334.68
  4. Step 4: Simplify right side
    351.12x = 162,922.22
  5. Step 5: Solve for x
    x = 162,922.22/351.12
  6. Step 6: Final answer
    x = 464.01

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.