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Finding the Fourth Proportional to 579.33, 799.41 and 317.28

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Solution

The fourth proportional to 579.33, 799.41 and 317.28 is: 437.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.33 : 799.41 = 317.28 : x
  2. Step 2: Convert to fraction form
    579.33/799.41 = 317.28/x
  3. Step 3: Cross multiply
    579.33x = 799.41 × 317.28
  4. Step 4: Simplify right side
    579.33x = 253,636.80
  5. Step 5: Solve for x
    x = 253,636.80/579.33
  6. Step 6: Final answer
    x = 437.81

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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.