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Finding the Fourth Proportional to 188.21, 282.13 and 127.35

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Solution

The fourth proportional to 188.21, 282.13 and 127.35 is: 190.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    188.21 : 282.13 = 127.35 : x
  2. Step 2: Convert to fraction form
    188.21/282.13 = 127.35/x
  3. Step 3: Cross multiply
    188.21x = 282.13 × 127.35
  4. Step 4: Simplify right side
    188.21x = 35,928.94
  5. Step 5: Solve for x
    x = 35,928.94/188.21
  6. Step 6: Final answer
    x = 190.90

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