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Finding the Fourth Proportional to 579.59, 799.78 and 330.86

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Solution

The fourth proportional to 579.59, 799.78 and 330.86 is: 456.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.59 : 799.78 = 330.86 : x
  2. Step 2: Convert to fraction form
    579.59/799.78 = 330.86/x
  3. Step 3: Cross multiply
    579.59x = 799.78 × 330.86
  4. Step 4: Simplify right side
    579.59x = 264,610.38
  5. Step 5: Solve for x
    x = 264,610.38/579.59
  6. Step 6: Final answer
    x = 456.55

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Double scale
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1.5x scale

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.