Finding the Fourth Proportional to 138.93, 208.44 and 133.44
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Solution
The fourth proportional to 138.93, 208.44 and 133.44 is: 200.20
Step by Step Solution
- Step 1: Write the proportion equation
138.93 : 208.44 = 133.44 : x - Step 2: Convert to fraction form
138.93/208.44 = 133.44/x - Step 3: Cross multiply
138.93x = 208.44 × 133.44 - Step 4: Simplify right side
138.93x = 27,814.23 - Step 5: Solve for x
x = 27,814.23/138.93 - Step 6: Final answer
x = 200.20
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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.