Finding the Fourth Proportional to 173.09, 259.69 and 91.99
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Solution
The fourth proportional to 173.09, 259.69 and 91.99 is: 138.01
Step by Step Solution
- Step 1: Write the proportion equation
173.09 : 259.69 = 91.99 : x - Step 2: Convert to fraction form
173.09/259.69 = 91.99/x - Step 3: Cross multiply
173.09x = 259.69 × 91.99 - Step 4: Simplify right side
173.09x = 23,888.88 - Step 5: Solve for x
x = 23,888.88/173.09 - Step 6: Final answer
x = 138.01
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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.