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Finding the Fourth Proportional to 518.89, 777.61 and 244.30

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Solution

The fourth proportional to 518.89, 777.61 and 244.30 is: 366.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    518.89 : 777.61 = 244.30 : x
  2. Step 2: Convert to fraction form
    518.89/777.61 = 244.30/x
  3. Step 3: Cross multiply
    518.89x = 777.61 × 244.30
  4. Step 4: Simplify right side
    518.89x = 189,970.12
  5. Step 5: Solve for x
    x = 189,970.12/518.89
  6. Step 6: Final answer
    x = 366.11

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.