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Finding the Fourth Proportional to 579.46, 799.66 and 330.79

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Solution

The fourth proportional to 579.46, 799.66 and 330.79 is: 456.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.46 : 799.66 = 330.79 : x
  2. Step 2: Convert to fraction form
    579.46/799.66 = 330.79/x
  3. Step 3: Cross multiply
    579.46x = 799.66 × 330.79
  4. Step 4: Simplify right side
    579.46x = 264,519.53
  5. Step 5: Solve for x
    x = 264,519.53/579.46
  6. Step 6: Final answer
    x = 456.49

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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.