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Finding the Fourth Proportional to 519.34, 779.12 and 154.13

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Solution

The fourth proportional to 519.34, 779.12 and 154.13 is: 231.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    519.34 : 779.12 = 154.13 : x
  2. Step 2: Convert to fraction form
    519.34/779.12 = 154.13/x
  3. Step 3: Cross multiply
    519.34x = 779.12 × 154.13
  4. Step 4: Simplify right side
    519.34x = 120,082.26
  5. Step 5: Solve for x
    x = 120,082.26/519.34
  6. Step 6: Final answer
    x = 231.22

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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.