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Finding the Fourth Proportional to 188.81, 282.49 and 164.71

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Solution

The fourth proportional to 188.81, 282.49 and 164.71 is: 246.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    188.81 : 282.49 = 164.71 : x
  2. Step 2: Convert to fraction form
    188.81/282.49 = 164.71/x
  3. Step 3: Cross multiply
    188.81x = 282.49 × 164.71
  4. Step 4: Simplify right side
    188.81x = 46,528.93
  5. Step 5: Solve for x
    x = 46,528.93/188.81
  6. Step 6: Final answer
    x = 246.43

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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.