Finding the Fourth Proportional to 75.99, 104.69 and 58.49
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Solution
The fourth proportional to 75.99, 104.69 and 58.49 is: 80.58
Step by Step Solution
- Step 1: Write the proportion equation
75.99 : 104.69 = 58.49 : x - Step 2: Convert to fraction form
75.99/104.69 = 58.49/x - Step 3: Cross multiply
75.99x = 104.69 × 58.49 - Step 4: Simplify right side
75.99x = 6,122.94 - Step 5: Solve for x
x = 6,122.94/75.99 - Step 6: Final answer
x = 80.58
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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.