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Finding the Fourth Proportional to 228.85, 315.82 and 145.96

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Solution

The fourth proportional to 228.85, 315.82 and 145.96 is: 201.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    228.85 : 315.82 = 145.96 : x
  2. Step 2: Convert to fraction form
    228.85/315.82 = 145.96/x
  3. Step 3: Cross multiply
    228.85x = 315.82 × 145.96
  4. Step 4: Simplify right side
    228.85x = 46,097.09
  5. Step 5: Solve for x
    x = 46,097.09/228.85
  6. Step 6: Final answer
    x = 201.43

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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.