Finding the Fourth Proportional to 91.77, 126.60 and 58.99
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Solution
The fourth proportional to 91.77, 126.60 and 58.99 is: 81.38
Step by Step Solution
- Step 1: Write the proportion equation
91.77 : 126.60 = 58.99 : x - Step 2: Convert to fraction form
91.77/126.60 = 58.99/x - Step 3: Cross multiply
91.77x = 126.60 × 58.99 - Step 4: Simplify right side
91.77x = 7,468.13 - Step 5: Solve for x
x = 7,468.13/91.77 - Step 6: Final answer
x = 81.38
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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.