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Finding the Fourth Proportional to 579.37, 799.49 and 317.33

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Solution

The fourth proportional to 579.37, 799.49 and 317.33 is: 437.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.37 : 799.49 = 317.33 : x
  2. Step 2: Convert to fraction form
    579.37/799.49 = 317.33/x
  3. Step 3: Cross multiply
    579.37x = 799.49 × 317.33
  4. Step 4: Simplify right side
    579.37x = 253,700.58
  5. Step 5: Solve for x
    x = 253,700.58/579.37
  6. Step 6: Final answer
    x = 437.89

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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.