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Finding the Fourth Proportional to 579.15, 799.47 and 369.34

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Solution

The fourth proportional to 579.15, 799.47 and 369.34 is: 509.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.15 : 799.47 = 369.34 : x
  2. Step 2: Convert to fraction form
    579.15/799.47 = 369.34/x
  3. Step 3: Cross multiply
    579.15x = 799.47 × 369.34
  4. Step 4: Simplify right side
    579.15x = 295,274.25
  5. Step 5: Solve for x
    x = 295,274.25/579.15
  6. Step 6: Final answer
    x = 509.84

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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.