Finding the Fourth Proportional to 249.51, 344.35 and 138.99
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Solution
The fourth proportional to 249.51, 344.35 and 138.99 is: 191.82
Step by Step Solution
- Step 1: Write the proportion equation
249.51 : 344.35 = 138.99 : x - Step 2: Convert to fraction form
249.51/344.35 = 138.99/x - Step 3: Cross multiply
249.51x = 344.35 × 138.99 - Step 4: Simplify right side
249.51x = 47,861.21 - Step 5: Solve for x
x = 47,861.21/249.51 - Step 6: Final answer
x = 191.82
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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.