Finding the Fourth Proportional to 125.26, 187.91 and 42.99
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Solution
The fourth proportional to 125.26, 187.91 and 42.99 is: 64.49
Step by Step Solution
- Step 1: Write the proportion equation
125.26 : 187.91 = 42.99 : x - Step 2: Convert to fraction form
125.26/187.91 = 42.99/x - Step 3: Cross multiply
125.26x = 187.91 × 42.99 - Step 4: Simplify right side
125.26x = 8,078.25 - Step 5: Solve for x
x = 8,078.25/125.26 - Step 6: Final answer
x = 64.49
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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.