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Finding the Fourth Proportional to 518, 777.08 and 301.68

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Solution

The fourth proportional to 518, 777.08 and 301.68 is: 452.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    518 : 777.08 = 301.68 : x
  2. Step 2: Convert to fraction form
    518/777.08 = 301.68/x
  3. Step 3: Cross multiply
    518x = 777.08 × 301.68
  4. Step 4: Simplify right side
    518x = 234,429.49
  5. Step 5: Solve for x
    x = 234,429.49/518
  6. Step 6: Final answer
    x = 452.57

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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.