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Finding the Fourth Proportional to 579.05, 799.11 and 317.07

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Solution

The fourth proportional to 579.05, 799.11 and 317.07 is: 437.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.05 : 799.11 = 317.07 : x
  2. Step 2: Convert to fraction form
    579.05/799.11 = 317.07/x
  3. Step 3: Cross multiply
    579.05x = 799.11 × 317.07
  4. Step 4: Simplify right side
    579.05x = 253,369.02
  5. Step 5: Solve for x
    x = 253,369.02/579.05
  6. Step 6: Final answer
    x = 437.56

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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.