Finding the Fourth Proportional to 161, 241.50 and 89
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Solution
The fourth proportional to 161, 241.50 and 89 is: 133.50
Step by Step Solution
- Step 1: Write the proportion equation
161 : 241.50 = 89 : x - Step 2: Convert to fraction form
161/241.50 = 89/x - Step 3: Cross multiply
161x = 241.50 × 89 - Step 4: Simplify right side
161x = 21,493.50 - Step 5: Solve for x
x = 21,493.50/161 - Step 6: Final answer
x = 133.50
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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.