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Finding the Fourth Proportional to 266.40, 400.14 and 254.52

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Solution

The fourth proportional to 266.40, 400.14 and 254.52 is: 382.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.40 : 400.14 = 254.52 : x
  2. Step 2: Convert to fraction form
    266.40/400.14 = 254.52/x
  3. Step 3: Cross multiply
    266.40x = 400.14 × 254.52
  4. Step 4: Simplify right side
    266.40x = 101,843.63
  5. Step 5: Solve for x
    x = 101,843.63/266.40
  6. Step 6: Final answer
    x = 382.30

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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.