Finding the Fourth Proportional to 518.44, 777.63 and 193.78
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Solution
The fourth proportional to 518.44, 777.63 and 193.78 is: 290.66
Step by Step Solution
- Step 1: Write the proportion equation
518.44 : 777.63 = 193.78 : x - Step 2: Convert to fraction form
518.44/777.63 = 193.78/x - Step 3: Cross multiply
518.44x = 777.63 × 193.78 - Step 4: Simplify right side
518.44x = 150,690.84 - Step 5: Solve for x
x = 150,690.84/518.44 - Step 6: Final answer
x = 290.66
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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.