Finding the Fourth Proportional to 144.01, 198.74 and 84.99
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Solution
The fourth proportional to 144.01, 198.74 and 84.99 is: 117.28
Step by Step Solution
- Step 1: Write the proportion equation
144.01 : 198.74 = 84.99 : x - Step 2: Convert to fraction form
144.01/198.74 = 84.99/x - Step 3: Cross multiply
144.01x = 198.74 × 84.99 - Step 4: Simplify right side
144.01x = 16,890.42 - Step 5: Solve for x
x = 16,890.42/144.01 - Step 6: Final answer
x = 117.28
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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.