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Finding the Fourth Proportional to 579.60, 799.79 and 377.35

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Solution

The fourth proportional to 579.60, 799.79 and 377.35 is: 520.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.60 : 799.79 = 377.35 : x
  2. Step 2: Convert to fraction form
    579.60/799.79 = 377.35/x
  3. Step 3: Cross multiply
    579.60x = 799.79 × 377.35
  4. Step 4: Simplify right side
    579.60x = 301,796.87
  5. Step 5: Solve for x
    x = 301,796.87/579.60
  6. Step 6: Final answer
    x = 520.70

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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.