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Finding the Fourth Proportional to 518.75, 778.23 and 230.19

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Solution

The fourth proportional to 518.75, 778.23 and 230.19 is: 345.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    518.75 : 778.23 = 230.19 : x
  2. Step 2: Convert to fraction form
    518.75/778.23 = 230.19/x
  3. Step 3: Cross multiply
    518.75x = 778.23 × 230.19
  4. Step 4: Simplify right side
    518.75x = 179,140.76
  5. Step 5: Solve for x
    x = 179,140.76/518.75
  6. Step 6: Final answer
    x = 345.33

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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.