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Finding the Fourth Proportional to 307.96, 461.31 and 267.40

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Solution

The fourth proportional to 307.96, 461.31 and 267.40 is: 400.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.96 : 461.31 = 267.40 : x
  2. Step 2: Convert to fraction form
    307.96/461.31 = 267.40/x
  3. Step 3: Cross multiply
    307.96x = 461.31 × 267.40
  4. Step 4: Simplify right side
    307.96x = 123,354.29
  5. Step 5: Solve for x
    x = 123,354.29/307.96
  6. Step 6: Final answer
    x = 400.55

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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.