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Finding the Fourth Proportional to 228.95, 343.06 and 147.73

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Solution

The fourth proportional to 228.95, 343.06 and 147.73 is: 221.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    228.95 : 343.06 = 147.73 : x
  2. Step 2: Convert to fraction form
    228.95/343.06 = 147.73/x
  3. Step 3: Cross multiply
    228.95x = 343.06 × 147.73
  4. Step 4: Simplify right side
    228.95x = 50,680.25
  5. Step 5: Solve for x
    x = 50,680.25/228.95
  6. Step 6: Final answer
    x = 221.36

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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.