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Finding the Fourth Proportional to 286.40, 395.01 and 193.10

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Solution

The fourth proportional to 286.40, 395.01 and 193.10 is: 266.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    286.40 : 395.01 = 193.10 : x
  2. Step 2: Convert to fraction form
    286.40/395.01 = 193.10/x
  3. Step 3: Cross multiply
    286.40x = 395.01 × 193.10
  4. Step 4: Simplify right side
    286.40x = 76,276.43
  5. Step 5: Solve for x
    x = 76,276.43/286.40
  6. Step 6: Final answer
    x = 266.33

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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.