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Finding the Fourth Proportional to 520.19, 779.83 and 195.38

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Solution

The fourth proportional to 520.19, 779.83 and 195.38 is: 292.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    520.19 : 779.83 = 195.38 : x
  2. Step 2: Convert to fraction form
    520.19/779.83 = 195.38/x
  3. Step 3: Cross multiply
    520.19x = 779.83 × 195.38
  4. Step 4: Simplify right side
    520.19x = 152,361.72
  5. Step 5: Solve for x
    x = 152,361.72/520.19
  6. Step 6: Final answer
    x = 292.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.