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Finding the Fourth Proportional to 286.53, 395.56 and 216.03

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Solution

The fourth proportional to 286.53, 395.56 and 216.03 is: 298.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    286.53 : 395.56 = 216.03 : x
  2. Step 2: Convert to fraction form
    286.53/395.56 = 216.03/x
  3. Step 3: Cross multiply
    286.53x = 395.56 × 216.03
  4. Step 4: Simplify right side
    286.53x = 85,451.98
  5. Step 5: Solve for x
    x = 85,451.98/286.53
  6. Step 6: Final answer
    x = 298.24

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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.