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Finding the Fourth Proportional to 188.46, 259.47 and 163.89

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Solution

The fourth proportional to 188.46, 259.47 and 163.89 is: 225.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    188.46 : 259.47 = 163.89 : x
  2. Step 2: Convert to fraction form
    188.46/259.47 = 163.89/x
  3. Step 3: Cross multiply
    188.46x = 259.47 × 163.89
  4. Step 4: Simplify right side
    188.46x = 42,524.54
  5. Step 5: Solve for x
    x = 42,524.54/188.46
  6. Step 6: Final answer
    x = 225.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.