Finding the Fourth Proportional to 144.25, 198.97 and 96.99
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Solution
The fourth proportional to 144.25, 198.97 and 96.99 is: 133.78
Step by Step Solution
- Step 1: Write the proportion equation
144.25 : 198.97 = 96.99 : x - Step 2: Convert to fraction form
144.25/198.97 = 96.99/x - Step 3: Cross multiply
144.25x = 198.97 × 96.99 - Step 4: Simplify right side
144.25x = 19,298.10 - Step 5: Solve for x
x = 19,298.10/144.25 - Step 6: Final answer
x = 133.78
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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.