Finding the Fourth Proportional to 125.67, 188.40 and 84.99
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Solution
The fourth proportional to 125.67, 188.40 and 84.99 is: 127.41
Step by Step Solution
- Step 1: Write the proportion equation
125.67 : 188.40 = 84.99 : x - Step 2: Convert to fraction form
125.67/188.40 = 84.99/x - Step 3: Cross multiply
125.67x = 188.40 × 84.99 - Step 4: Simplify right side
125.67x = 16,012.12 - Step 5: Solve for x
x = 16,012.12/125.67 - Step 6: Final answer
x = 127.41
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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.