Finding the Fourth Proportional to 236.75, 355.08 and 114.80
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Solution
The fourth proportional to 236.75, 355.08 and 114.80 is: 172.18
Step by Step Solution
- Step 1: Write the proportion equation
236.75 : 355.08 = 114.80 : x - Step 2: Convert to fraction form
236.75/355.08 = 114.80/x - Step 3: Cross multiply
236.75x = 355.08 × 114.80 - Step 4: Simplify right side
236.75x = 40,763.18 - Step 5: Solve for x
x = 40,763.18/236.75 - Step 6: Final answer
x = 172.18
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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.