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Finding the Fourth Proportional to 188.14, 281.72 and 157.64

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Solution

The fourth proportional to 188.14, 281.72 and 157.64 is: 236.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    188.14 : 281.72 = 157.64 : x
  2. Step 2: Convert to fraction form
    188.14/281.72 = 157.64/x
  3. Step 3: Cross multiply
    188.14x = 281.72 × 157.64
  4. Step 4: Simplify right side
    188.14x = 44,410.34
  5. Step 5: Solve for x
    x = 44,410.34/188.14
  6. Step 6: Final answer
    x = 236.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.