Finding the Fourth Proportional to 108.11, 149.18 and 58.99
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Solution
The fourth proportional to 108.11, 149.18 and 58.99 is: 81.40
Step by Step Solution
- Step 1: Write the proportion equation
108.11 : 149.18 = 58.99 : x - Step 2: Convert to fraction form
108.11/149.18 = 58.99/x - Step 3: Cross multiply
108.11x = 149.18 × 58.99 - Step 4: Simplify right side
108.11x = 8,799.82 - Step 5: Solve for x
x = 8,799.82/108.11 - Step 6: Final answer
x = 81.40
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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.