Finding the Fourth Proportional to 205.60, 283.70 and 122.70
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Solution
The fourth proportional to 205.60, 283.70 and 122.70 is: 169.31
Step by Step Solution
- Step 1: Write the proportion equation
205.60 : 283.70 = 122.70 : x - Step 2: Convert to fraction form
205.60/283.70 = 122.70/x - Step 3: Cross multiply
205.60x = 283.70 × 122.70 - Step 4: Simplify right side
205.60x = 34,809.99 - Step 5: Solve for x
x = 34,809.99/205.60 - Step 6: Final answer
x = 169.31
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.