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Finding the Fourth Proportional to 486.51, 676.04 and 481.51

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Solution

The fourth proportional to 486.51, 676.04 and 481.51 is: 669.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    486.51 : 676.04 = 481.51 : x
  2. Step 2: Convert to fraction form
    486.51/676.04 = 481.51/x
  3. Step 3: Cross multiply
    486.51x = 676.04 × 481.51
  4. Step 4: Simplify right side
    486.51x = 325,520.02
  5. Step 5: Solve for x
    x = 325,520.02/486.51
  6. Step 6: Final answer
    x = 669.09

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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.