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Finding the Fourth Proportional to 518.34, 776.43 and 244.65

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Solution

The fourth proportional to 518.34, 776.43 and 244.65 is: 366.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    518.34 : 776.43 = 244.65 : x
  2. Step 2: Convert to fraction form
    518.34/776.43 = 244.65/x
  3. Step 3: Cross multiply
    518.34x = 776.43 × 244.65
  4. Step 4: Simplify right side
    518.34x = 189,953.60
  5. Step 5: Solve for x
    x = 189,953.60/518.34
  6. Step 6: Final answer
    x = 366.47

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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.