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Finding the Fourth Proportional to 511.66, 767.49 and 186.95

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Solution

The fourth proportional to 511.66, 767.49 and 186.95 is: 280.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.66 : 767.49 = 186.95 : x
  2. Step 2: Convert to fraction form
    511.66/767.49 = 186.95/x
  3. Step 3: Cross multiply
    511.66x = 767.49 × 186.95
  4. Step 4: Simplify right side
    511.66x = 143,480.60
  5. Step 5: Solve for x
    x = 143,480.60/511.66
  6. Step 6: Final answer
    x = 280.42

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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.