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Finding the Fourth Proportional to 188.41, 260.03 and 122.10

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Solution

The fourth proportional to 188.41, 260.03 and 122.10 is: 168.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    188.41 : 260.03 = 122.10 : x
  2. Step 2: Convert to fraction form
    188.41/260.03 = 122.10/x
  3. Step 3: Cross multiply
    188.41x = 260.03 × 122.10
  4. Step 4: Simplify right side
    188.41x = 31,749.66
  5. Step 5: Solve for x
    x = 31,749.66/188.41
  6. Step 6: Final answer
    x = 168.51

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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.