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Finding the Fourth Proportional to 188.97, 282.95 and 131.07

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Solution

The fourth proportional to 188.97, 282.95 and 131.07 is: 196.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    188.97 : 282.95 = 131.07 : x
  2. Step 2: Convert to fraction form
    188.97/282.95 = 131.07/x
  3. Step 3: Cross multiply
    188.97x = 282.95 × 131.07
  4. Step 4: Simplify right side
    188.97x = 37,085.60
  5. Step 5: Solve for x
    x = 37,085.60/188.97
  6. Step 6: Final answer
    x = 196.25

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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.