Finding the Fourth Proportional to 236.70, 355.08 and 115.08
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Solution
The fourth proportional to 236.70, 355.08 and 115.08 is: 172.63
Step by Step Solution
- Step 1: Write the proportion equation
236.70 : 355.08 = 115.08 : x - Step 2: Convert to fraction form
236.70/355.08 = 115.08/x - Step 3: Cross multiply
236.70x = 355.08 × 115.08 - Step 4: Simplify right side
236.70x = 40,862.61 - Step 5: Solve for x
x = 40,862.61/236.70 - Step 6: Final answer
x = 172.63
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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.