Finding the Fourth Proportional to 104.75, 144.51 and 71.99
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Solution
The fourth proportional to 104.75, 144.51 and 71.99 is: 99.32
Step by Step Solution
- Step 1: Write the proportion equation
104.75 : 144.51 = 71.99 : x - Step 2: Convert to fraction form
104.75/144.51 = 71.99/x - Step 3: Cross multiply
104.75x = 144.51 × 71.99 - Step 4: Simplify right side
104.75x = 10,403.27 - Step 5: Solve for x
x = 10,403.27/104.75 - Step 6: Final answer
x = 99.32
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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.