Finding the Fourth Proportional to 236.99, 355.30 and 115.22
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Solution
The fourth proportional to 236.99, 355.30 and 115.22 is: 172.74
Step by Step Solution
- Step 1: Write the proportion equation
236.99 : 355.30 = 115.22 : x - Step 2: Convert to fraction form
236.99/355.30 = 115.22/x - Step 3: Cross multiply
236.99x = 355.30 × 115.22 - Step 4: Simplify right side
236.99x = 40,937.67 - Step 5: Solve for x
x = 40,937.67/236.99 - Step 6: Final answer
x = 172.74
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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.