Finding the Fourth Proportional to 104.80, 157.11 and 46.99
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Solution
The fourth proportional to 104.80, 157.11 and 46.99 is: 70.45
Step by Step Solution
- Step 1: Write the proportion equation
104.80 : 157.11 = 46.99 : x - Step 2: Convert to fraction form
104.80/157.11 = 46.99/x - Step 3: Cross multiply
104.80x = 157.11 × 46.99 - Step 4: Simplify right side
104.80x = 7,383.24 - Step 5: Solve for x
x = 7,383.24/104.80 - Step 6: Final answer
x = 70.45
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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.