Finding the Fourth Proportional to 92.69, 138.95 and 46.99
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Solution
The fourth proportional to 92.69, 138.95 and 46.99 is: 70.44
Step by Step Solution
- Step 1: Write the proportion equation
92.69 : 138.95 = 46.99 : x - Step 2: Convert to fraction form
92.69/138.95 = 46.99/x - Step 3: Cross multiply
92.69x = 138.95 × 46.99 - Step 4: Simplify right side
92.69x = 6,529.26 - Step 5: Solve for x
x = 6,529.26/92.69 - Step 6: Final answer
x = 70.44
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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.