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Finding the Fourth Proportional to 511.27, 766.54 and 186.59

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Solution

The fourth proportional to 511.27, 766.54 and 186.59 is: 279.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.27 : 766.54 = 186.59 : x
  2. Step 2: Convert to fraction form
    511.27/766.54 = 186.59/x
  3. Step 3: Cross multiply
    511.27x = 766.54 × 186.59
  4. Step 4: Simplify right side
    511.27x = 143,028.70
  5. Step 5: Solve for x
    x = 143,028.70/511.27
  6. Step 6: Final answer
    x = 279.75

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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.