Finding the Fourth Proportional to 91.73, 126.58 and 58.99
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Solution
The fourth proportional to 91.73, 126.58 and 58.99 is: 81.40
Step by Step Solution
- Step 1: Write the proportion equation
91.73 : 126.58 = 58.99 : x - Step 2: Convert to fraction form
91.73/126.58 = 58.99/x - Step 3: Cross multiply
91.73x = 126.58 × 58.99 - Step 4: Simplify right side
91.73x = 7,466.95 - Step 5: Solve for x
x = 7,466.95/91.73 - Step 6: Final answer
x = 81.40
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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.