Finding the Fourth Proportional to 338.10, 506.95 and 121.70
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Solution
The fourth proportional to 338.10, 506.95 and 121.70 is: 182.47
Step by Step Solution
- Step 1: Write the proportion equation
338.10 : 506.95 = 121.70 : x - Step 2: Convert to fraction form
338.10/506.95 = 121.70/x - Step 3: Cross multiply
338.10x = 506.95 × 121.70 - Step 4: Simplify right side
338.10x = 61,692.98 - Step 5: Solve for x
x = 61,692.98/338.10 - Step 6: Final answer
x = 182.47
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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.