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Finding the Fourth Proportional to 266.09, 399 and 254.87

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Solution

The fourth proportional to 266.09, 399 and 254.87 is: 382.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.09 : 399 = 254.87 : x
  2. Step 2: Convert to fraction form
    266.09/399 = 254.87/x
  3. Step 3: Cross multiply
    266.09x = 399 × 254.87
  4. Step 4: Simplify right side
    266.09x = 101,693.13
  5. Step 5: Solve for x
    x = 101,693.13/266.09
  6. Step 6: Final answer
    x = 382.18

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.