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Finding the Fourth Proportional to 227.88, 341.81 and 99.63

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Solution

The fourth proportional to 227.88, 341.81 and 99.63 is: 149.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.88 : 341.81 = 99.63 : x
  2. Step 2: Convert to fraction form
    227.88/341.81 = 99.63/x
  3. Step 3: Cross multiply
    227.88x = 341.81 × 99.63
  4. Step 4: Simplify right side
    227.88x = 34,054.53
  5. Step 5: Solve for x
    x = 34,054.53/227.88
  6. Step 6: Final answer
    x = 149.44

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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.