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Finding the Fourth Proportional to 579.30, 799.50 and 317.34

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Solution

The fourth proportional to 579.30, 799.50 and 317.34 is: 437.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.30 : 799.50 = 317.34 : x
  2. Step 2: Convert to fraction form
    579.30/799.50 = 317.34/x
  3. Step 3: Cross multiply
    579.30x = 799.50 × 317.34
  4. Step 4: Simplify right side
    579.30x = 253,713.33
  5. Step 5: Solve for x
    x = 253,713.33/579.30
  6. Step 6: Final answer
    x = 437.97

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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.