Finding the Fourth Proportional to 338.70, 465.08 and 272.70
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Solution
The fourth proportional to 338.70, 465.08 and 272.70 is: 374.45
Step by Step Solution
- Step 1: Write the proportion equation
338.70 : 465.08 = 272.70 : x - Step 2: Convert to fraction form
338.70/465.08 = 272.70/x - Step 3: Cross multiply
338.70x = 465.08 × 272.70 - Step 4: Simplify right side
338.70x = 126,825.95 - Step 5: Solve for x
x = 126,825.95/338.70 - Step 6: Final answer
x = 374.45
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.