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Finding the Fourth Proportional to 579.05, 799.08 and 317.08

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Solution

The fourth proportional to 579.05, 799.08 and 317.08 is: 437.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.05 : 799.08 = 317.08 : x
  2. Step 2: Convert to fraction form
    579.05/799.08 = 317.08/x
  3. Step 3: Cross multiply
    579.05x = 799.08 × 317.08
  4. Step 4: Simplify right side
    579.05x = 253,368.29
  5. Step 5: Solve for x
    x = 253,368.29/579.05
  6. Step 6: Final answer
    x = 437.56

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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.