Finding the Fourth Proportional to 75.26, 112.68 and 68.84
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Solution
The fourth proportional to 75.26, 112.68 and 68.84 is: 103.07
Step by Step Solution
- Step 1: Write the proportion equation
75.26 : 112.68 = 68.84 : x - Step 2: Convert to fraction form
75.26/112.68 = 68.84/x - Step 3: Cross multiply
75.26x = 112.68 × 68.84 - Step 4: Simplify right side
75.26x = 7,756.33 - Step 5: Solve for x
x = 7,756.33/75.26 - Step 6: Final answer
x = 103.07
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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.