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Finding the Fourth Proportional to 520.11, 779.93 and 195.39

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Solution

The fourth proportional to 520.11, 779.93 and 195.39 is: 292.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    520.11 : 779.93 = 195.39 : x
  2. Step 2: Convert to fraction form
    520.11/779.93 = 195.39/x
  3. Step 3: Cross multiply
    520.11x = 779.93 × 195.39
  4. Step 4: Simplify right side
    520.11x = 152,389.55
  5. Step 5: Solve for x
    x = 152,389.55/520.11
  6. Step 6: Final answer
    x = 292.99

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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.