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Finding the Fourth Proportional to 511.51, 766.05 and 267.31

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Solution

The fourth proportional to 511.51, 766.05 and 267.31 is: 400.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.51 : 766.05 = 267.31 : x
  2. Step 2: Convert to fraction form
    511.51/766.05 = 267.31/x
  3. Step 3: Cross multiply
    511.51x = 766.05 × 267.31
  4. Step 4: Simplify right side
    511.51x = 204,772.83
  5. Step 5: Solve for x
    x = 204,772.83/511.51
  6. Step 6: Final answer
    x = 400.33

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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.