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Finding the Fourth Proportional to 186.36, 255.60 and 164.49

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Solution

The fourth proportional to 186.36, 255.60 and 164.49 is: 225.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    186.36 : 255.60 = 164.49 : x
  2. Step 2: Convert to fraction form
    186.36/255.60 = 164.49/x
  3. Step 3: Cross multiply
    186.36x = 255.60 × 164.49
  4. Step 4: Simplify right side
    186.36x = 42,043.64
  5. Step 5: Solve for x
    x = 42,043.64/186.36
  6. Step 6: Final answer
    x = 225.60

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.