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Finding the Fourth Proportional to 228.88, 315.85 and 125.38

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Solution

The fourth proportional to 228.88, 315.85 and 125.38 is: 173.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    228.88 : 315.85 = 125.38 : x
  2. Step 2: Convert to fraction form
    228.88/315.85 = 125.38/x
  3. Step 3: Cross multiply
    228.88x = 315.85 × 125.38
  4. Step 4: Simplify right side
    228.88x = 39,599.69
  5. Step 5: Solve for x
    x = 39,599.69/228.88
  6. Step 6: Final answer
    x = 173.02

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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.