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Finding the Fourth Proportional to 579.32, 799.45 and 317.33

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Solution

The fourth proportional to 579.32, 799.45 and 317.33 is: 437.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.32 : 799.45 = 317.33 : x
  2. Step 2: Convert to fraction form
    579.32/799.45 = 317.33/x
  3. Step 3: Cross multiply
    579.32x = 799.45 × 317.33
  4. Step 4: Simplify right side
    579.32x = 253,689.47
  5. Step 5: Solve for x
    x = 253,689.47/579.32
  6. Step 6: Final answer
    x = 437.91

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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.