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Finding the Fourth Proportional to 579.09, 799.17 and 317.13

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Solution

The fourth proportional to 579.09, 799.17 and 317.13 is: 437.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.09 : 799.17 = 317.13 : x
  2. Step 2: Convert to fraction form
    579.09/799.17 = 317.13/x
  3. Step 3: Cross multiply
    579.09x = 799.17 × 317.13
  4. Step 4: Simplify right side
    579.09x = 253,436.60
  5. Step 5: Solve for x
    x = 253,436.60/579.09
  6. Step 6: Final answer
    x = 437.64

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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.