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Finding the Fourth Proportional to 286.81, 395.75 and 174.69

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Solution

The fourth proportional to 286.81, 395.75 and 174.69 is: 241.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    286.81 : 395.75 = 174.69 : x
  2. Step 2: Convert to fraction form
    286.81/395.75 = 174.69/x
  3. Step 3: Cross multiply
    286.81x = 395.75 × 174.69
  4. Step 4: Simplify right side
    286.81x = 69,134.00
  5. Step 5: Solve for x
    x = 69,134.00/286.81
  6. Step 6: Final answer
    x = 241.05

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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.