Finding the Fourth Proportional to 104.05, 143.67 and 73.07
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Solution
The fourth proportional to 104.05, 143.67 and 73.07 is: 100.89
Step by Step Solution
- Step 1: Write the proportion equation
104.05 : 143.67 = 73.07 : x - Step 2: Convert to fraction form
104.05/143.67 = 73.07/x - Step 3: Cross multiply
104.05x = 143.67 × 73.07 - Step 4: Simplify right side
104.05x = 10,498.06 - Step 5: Solve for x
x = 10,498.06/104.05 - Step 6: Final answer
x = 100.89
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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.