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Finding the Fourth Proportional to 512.75, 767.49 and 375.15

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Solution

The fourth proportional to 512.75, 767.49 and 375.15 is: 561.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    512.75 : 767.49 = 375.15 : x
  2. Step 2: Convert to fraction form
    512.75/767.49 = 375.15/x
  3. Step 3: Cross multiply
    512.75x = 767.49 × 375.15
  4. Step 4: Simplify right side
    512.75x = 287,923.87
  5. Step 5: Solve for x
    x = 287,923.87/512.75
  6. Step 6: Final answer
    x = 561.53

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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.