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Finding the Fourth Proportional to 511.31, 767.26 and 267.90

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Solution

The fourth proportional to 511.31, 767.26 and 267.90 is: 402.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    511.31 : 767.26 = 267.90 : x
  2. Step 2: Convert to fraction form
    511.31/767.26 = 267.90/x
  3. Step 3: Cross multiply
    511.31x = 767.26 × 267.90
  4. Step 4: Simplify right side
    511.31x = 205,549.29
  5. Step 5: Solve for x
    x = 205,549.29/511.31
  6. Step 6: Final answer
    x = 402.01

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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.