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Finding the Fourth Proportional to 579.08, 798.93 and 330.31

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Solution

The fourth proportional to 579.08, 798.93 and 330.31 is: 455.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.08 : 798.93 = 330.31 : x
  2. Step 2: Convert to fraction form
    579.08/798.93 = 330.31/x
  3. Step 3: Cross multiply
    579.08x = 798.93 × 330.31
  4. Step 4: Simplify right side
    579.08x = 263,895.57
  5. Step 5: Solve for x
    x = 263,895.57/579.08
  6. Step 6: Final answer
    x = 455.71

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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.