Finding the Fourth Proportional to 92.08, 138.18 and 40.76
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Solution
The fourth proportional to 92.08, 138.18 and 40.76 is: 61.17
Step by Step Solution
- Step 1: Write the proportion equation
92.08 : 138.18 = 40.76 : x - Step 2: Convert to fraction form
92.08/138.18 = 40.76/x - Step 3: Cross multiply
92.08x = 138.18 × 40.76 - Step 4: Simplify right side
92.08x = 5,632.22 - Step 5: Solve for x
x = 5,632.22/92.08 - Step 6: Final answer
x = 61.17
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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.