Finding the Fourth Proportional to 116.66, 175.35 and 74.18
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Solution
The fourth proportional to 116.66, 175.35 and 74.18 is: 111.50
Step by Step Solution
- Step 1: Write the proportion equation
116.66 : 175.35 = 74.18 : x - Step 2: Convert to fraction form
116.66/175.35 = 74.18/x - Step 3: Cross multiply
116.66x = 175.35 × 74.18 - Step 4: Simplify right side
116.66x = 13,007.46 - Step 5: Solve for x
x = 13,007.46/116.66 - Step 6: Final answer
x = 111.50
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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.