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Finding the Fourth Proportional to 267.30, 397.71 and 266.34

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Solution

The fourth proportional to 267.30, 397.71 and 266.34 is: 396.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.30 : 397.71 = 266.34 : x
  2. Step 2: Convert to fraction form
    267.30/397.71 = 266.34/x
  3. Step 3: Cross multiply
    267.30x = 397.71 × 266.34
  4. Step 4: Simplify right side
    267.30x = 105,926.08
  5. Step 5: Solve for x
    x = 105,926.08/267.30
  6. Step 6: Final answer
    x = 396.28

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.