Finding the Fourth Proportional to 197.99, 273.39 and 135.80
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Solution
The fourth proportional to 197.99, 273.39 and 135.80 is: 187.52
Step by Step Solution
- Step 1: Write the proportion equation
197.99 : 273.39 = 135.80 : x - Step 2: Convert to fraction form
197.99/273.39 = 135.80/x - Step 3: Cross multiply
197.99x = 273.39 × 135.80 - Step 4: Simplify right side
197.99x = 37,126.36 - Step 5: Solve for x
x = 37,126.36/197.99 - Step 6: Final answer
x = 187.52
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.