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Finding the Fourth Proportional to 228.20, 341.98 and 197.69

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Solution

The fourth proportional to 228.20, 341.98 and 197.69 is: 296.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    228.20 : 341.98 = 197.69 : x
  2. Step 2: Convert to fraction form
    228.20/341.98 = 197.69/x
  3. Step 3: Cross multiply
    228.20x = 341.98 × 197.69
  4. Step 4: Simplify right side
    228.20x = 67,603.82
  5. Step 5: Solve for x
    x = 67,603.82/228.20
  6. Step 6: Final answer
    x = 296.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.