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Finding the Fourth Proportional to 511.23, 766.76 and 186.51

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Solution

The fourth proportional to 511.23, 766.76 and 186.51 is: 279.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.23 : 766.76 = 186.51 : x
  2. Step 2: Convert to fraction form
    511.23/766.76 = 186.51/x
  3. Step 3: Cross multiply
    511.23x = 766.76 × 186.51
  4. Step 4: Simplify right side
    511.23x = 143,007.48
  5. Step 5: Solve for x
    x = 143,007.48/511.23
  6. Step 6: Final answer
    x = 279.73

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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.