Finding the Fourth Proportional to 116.18, 174.51 and 75.15
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Solution
The fourth proportional to 116.18, 174.51 and 75.15 is: 112.88
Step by Step Solution
- Step 1: Write the proportion equation
116.18 : 174.51 = 75.15 : x - Step 2: Convert to fraction form
116.18/174.51 = 75.15/x - Step 3: Cross multiply
116.18x = 174.51 × 75.15 - Step 4: Simplify right side
116.18x = 13,114.43 - Step 5: Solve for x
x = 13,114.43/116.18 - Step 6: Final answer
x = 112.88
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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.