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Finding the Fourth Proportional to 518.62, 777.42 and 244.48

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Solution

The fourth proportional to 518.62, 777.42 and 244.48 is: 366.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    518.62 : 777.42 = 244.48 : x
  2. Step 2: Convert to fraction form
    518.62/777.42 = 244.48/x
  3. Step 3: Cross multiply
    518.62x = 777.42 × 244.48
  4. Step 4: Simplify right side
    518.62x = 190,063.64
  5. Step 5: Solve for x
    x = 190,063.64/518.62
  6. Step 6: Final answer
    x = 366.48

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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.