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Finding the Fourth Proportional to 188.21, 260.06 and 171.60

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Solution

The fourth proportional to 188.21, 260.06 and 171.60 is: 237.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    188.21 : 260.06 = 171.60 : x
  2. Step 2: Convert to fraction form
    188.21/260.06 = 171.60/x
  3. Step 3: Cross multiply
    188.21x = 260.06 × 171.60
  4. Step 4: Simplify right side
    188.21x = 44,625.44
  5. Step 5: Solve for x
    x = 44,625.44/188.21
  6. Step 6: Final answer
    x = 237.11

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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.