Finding the Fourth Proportional to 381.21, 525.60 and 249.99
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Solution
The fourth proportional to 381.21, 525.60 and 249.99 is: 344.68
Step by Step Solution
- Step 1: Write the proportion equation
381.21 : 525.60 = 249.99 : x - Step 2: Convert to fraction form
381.21/525.60 = 249.99/x - Step 3: Cross multiply
381.21x = 525.60 × 249.99 - Step 4: Simplify right side
381.21x = 131,394.74 - Step 5: Solve for x
x = 131,394.74/381.21 - Step 6: Final answer
x = 344.68
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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.