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Finding the Fourth Proportional to 518.55, 777.84 and 244.56

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Solution

The fourth proportional to 518.55, 777.84 and 244.56 is: 366.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    518.55 : 777.84 = 244.56 : x
  2. Step 2: Convert to fraction form
    518.55/777.84 = 244.56/x
  3. Step 3: Cross multiply
    518.55x = 777.84 × 244.56
  4. Step 4: Simplify right side
    518.55x = 190,228.55
  5. Step 5: Solve for x
    x = 190,228.55/518.55
  6. Step 6: Final answer
    x = 366.85

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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.