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Finding the Fourth Proportional to 352.66, 486.13 and 254.42

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Solution

The fourth proportional to 352.66, 486.13 and 254.42 is: 350.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.66 : 486.13 = 254.42 : x
  2. Step 2: Convert to fraction form
    352.66/486.13 = 254.42/x
  3. Step 3: Cross multiply
    352.66x = 486.13 × 254.42
  4. Step 4: Simplify right side
    352.66x = 123,681.19
  5. Step 5: Solve for x
    x = 123,681.19/352.66
  6. Step 6: Final answer
    x = 350.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.