Finding the Fourth Proportional to 107.63, 148.53 and 63.99
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Solution
The fourth proportional to 107.63, 148.53 and 63.99 is: 88.31
Step by Step Solution
- Step 1: Write the proportion equation
107.63 : 148.53 = 63.99 : x - Step 2: Convert to fraction form
107.63/148.53 = 63.99/x - Step 3: Cross multiply
107.63x = 148.53 × 63.99 - Step 4: Simplify right side
107.63x = 9,504.67 - Step 5: Solve for x
x = 9,504.67/107.63 - Step 6: Final answer
x = 88.31
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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.