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Finding the Fourth Proportional to 227.99, 342.20 and 146.88

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Solution

The fourth proportional to 227.99, 342.20 and 146.88 is: 220.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.99 : 342.20 = 146.88 : x
  2. Step 2: Convert to fraction form
    227.99/342.20 = 146.88/x
  3. Step 3: Cross multiply
    227.99x = 342.20 × 146.88
  4. Step 4: Simplify right side
    227.99x = 50,261.60
  5. Step 5: Solve for x
    x = 50,261.60/227.99
  6. Step 6: Final answer
    x = 220.46

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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.