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Finding the Fourth Proportional to 579.63, 799.79 and 343.77

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Solution

The fourth proportional to 579.63, 799.79 and 343.77 is: 474.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.63 : 799.79 = 343.77 : x
  2. Step 2: Convert to fraction form
    579.63/799.79 = 343.77/x
  3. Step 3: Cross multiply
    579.63x = 799.79 × 343.77
  4. Step 4: Simplify right side
    579.63x = 274,942.09
  5. Step 5: Solve for x
    x = 274,942.09/579.63
  6. Step 6: Final answer
    x = 474.34

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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.