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Finding the Fourth Proportional to 188.79, 281.82 and 164.49

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Solution

The fourth proportional to 188.79, 281.82 and 164.49 is: 245.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    188.79 : 281.82 = 164.49 : x
  2. Step 2: Convert to fraction form
    188.79/281.82 = 164.49/x
  3. Step 3: Cross multiply
    188.79x = 281.82 × 164.49
  4. Step 4: Simplify right side
    188.79x = 46,356.57
  5. Step 5: Solve for x
    x = 46,356.57/188.79
  6. Step 6: Final answer
    x = 245.55

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.