Finding the Fourth Proportional to 144.40, 216.42 and 80.08
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Solution
The fourth proportional to 144.40, 216.42 and 80.08 is: 120.02
Step by Step Solution
- Step 1: Write the proportion equation
144.40 : 216.42 = 80.08 : x - Step 2: Convert to fraction form
144.40/216.42 = 80.08/x - Step 3: Cross multiply
144.40x = 216.42 × 80.08 - Step 4: Simplify right side
144.40x = 17,330.91 - Step 5: Solve for x
x = 17,330.91/144.40 - Step 6: Final answer
x = 120.02
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.