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Finding the Fourth Proportional to 229.05, 342.36 and 188.55

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Solution

The fourth proportional to 229.05, 342.36 and 188.55 is: 281.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    229.05 : 342.36 = 188.55 : x
  2. Step 2: Convert to fraction form
    229.05/342.36 = 188.55/x
  3. Step 3: Cross multiply
    229.05x = 342.36 × 188.55
  4. Step 4: Simplify right side
    229.05x = 64,551.98
  5. Step 5: Solve for x
    x = 64,551.98/229.05
  6. Step 6: Final answer
    x = 281.82

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.