Finding the Fourth Proportional to 111.11, 166.61 and 56.99
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Solution
The fourth proportional to 111.11, 166.61 and 56.99 is: 85.45
Step by Step Solution
- Step 1: Write the proportion equation
111.11 : 166.61 = 56.99 : x - Step 2: Convert to fraction form
111.11/166.61 = 56.99/x - Step 3: Cross multiply
111.11x = 166.61 × 56.99 - Step 4: Simplify right side
111.11x = 9,493.99 - Step 5: Solve for x
x = 9,493.99/111.11 - Step 6: Final answer
x = 85.45
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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.