Finding the Fourth Proportional to 126.15, 189.27 and 44.99
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Solution
The fourth proportional to 126.15, 189.27 and 44.99 is: 67.50
Step by Step Solution
- Step 1: Write the proportion equation
126.15 : 189.27 = 44.99 : x - Step 2: Convert to fraction form
126.15/189.27 = 44.99/x - Step 3: Cross multiply
126.15x = 189.27 × 44.99 - Step 4: Simplify right side
126.15x = 8,515.26 - Step 5: Solve for x
x = 8,515.26/126.15 - Step 6: Final answer
x = 67.50
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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.