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Finding the Fourth Proportional to 511.95, 766.31 and 268.14

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Solution

The fourth proportional to 511.95, 766.31 and 268.14 is: 401.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.95 : 766.31 = 268.14 : x
  2. Step 2: Convert to fraction form
    511.95/766.31 = 268.14/x
  3. Step 3: Cross multiply
    511.95x = 766.31 × 268.14
  4. Step 4: Simplify right side
    511.95x = 205,477.02
  5. Step 5: Solve for x
    x = 205,477.02/511.95
  6. Step 6: Final answer
    x = 401.36

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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.