Finding the Fourth Proportional to 92.41, 137.57 and 91.95
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Solution
The fourth proportional to 92.41, 137.57 and 91.95 is: 136.88
Step by Step Solution
- Step 1: Write the proportion equation
92.41 : 137.57 = 91.95 : x - Step 2: Convert to fraction form
92.41/137.57 = 91.95/x - Step 3: Cross multiply
92.41x = 137.57 × 91.95 - Step 4: Simplify right side
92.41x = 12,648.59 - Step 5: Solve for x
x = 12,648.59/92.41 - Step 6: Final answer
x = 136.88
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.