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Finding the Fourth Proportional to 266.93, 400.28 and 84.27

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Solution

The fourth proportional to 266.93, 400.28 and 84.27 is: 126.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.93 : 400.28 = 84.27 : x
  2. Step 2: Convert to fraction form
    266.93/400.28 = 84.27/x
  3. Step 3: Cross multiply
    266.93x = 400.28 × 84.27
  4. Step 4: Simplify right side
    266.93x = 33,731.17
  5. Step 5: Solve for x
    x = 33,731.17/266.93
  6. Step 6: Final answer
    x = 126.37

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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.