Finding the Fourth Proportional to 161.08, 241.69 and 87.91
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Solution
The fourth proportional to 161.08, 241.69 and 87.91 is: 131.90
Step by Step Solution
- Step 1: Write the proportion equation
161.08 : 241.69 = 87.91 : x - Step 2: Convert to fraction form
161.08/241.69 = 87.91/x - Step 3: Cross multiply
161.08x = 241.69 × 87.91 - Step 4: Simplify right side
161.08x = 21,246.97 - Step 5: Solve for x
x = 21,246.97/161.08 - Step 6: Final answer
x = 131.90
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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.