Finding the Fourth Proportional to 98.09, 147.12 and 40.31
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Solution
The fourth proportional to 98.09, 147.12 and 40.31 is: 60.46
Step by Step Solution
- Step 1: Write the proportion equation
98.09 : 147.12 = 40.31 : x - Step 2: Convert to fraction form
98.09/147.12 = 40.31/x - Step 3: Cross multiply
98.09x = 147.12 × 40.31 - Step 4: Simplify right side
98.09x = 5,930.90 - Step 5: Solve for x
x = 5,930.90/98.09 - Step 6: Final answer
x = 60.46
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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.