Finding the Fourth Proportional to 236.80, 355.15 and 114.99
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Solution
The fourth proportional to 236.80, 355.15 and 114.99 is: 172.46
Step by Step Solution
- Step 1: Write the proportion equation
236.80 : 355.15 = 114.99 : x - Step 2: Convert to fraction form
236.80/355.15 = 114.99/x - Step 3: Cross multiply
236.80x = 355.15 × 114.99 - Step 4: Simplify right side
236.80x = 40,838.70 - Step 5: Solve for x
x = 40,838.70/236.80 - Step 6: Final answer
x = 172.46
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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.