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Finding the Fourth Proportional to 188.37, 259.74 and 163.76

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Solution

The fourth proportional to 188.37, 259.74 and 163.76 is: 225.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    188.37 : 259.74 = 163.76 : x
  2. Step 2: Convert to fraction form
    188.37/259.74 = 163.76/x
  3. Step 3: Cross multiply
    188.37x = 259.74 × 163.76
  4. Step 4: Simplify right side
    188.37x = 42,533.72
  5. Step 5: Solve for x
    x = 42,533.72/188.37
  6. Step 6: Final answer
    x = 225.80

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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.