Finding the Fourth Proportional to 197.04, 272.07 and 138.99
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Solution
The fourth proportional to 197.04, 272.07 and 138.99 is: 191.92
Step by Step Solution
- Step 1: Write the proportion equation
197.04 : 272.07 = 138.99 : x - Step 2: Convert to fraction form
197.04/272.07 = 138.99/x - Step 3: Cross multiply
197.04x = 272.07 × 138.99 - Step 4: Simplify right side
197.04x = 37,815.01 - Step 5: Solve for x
x = 37,815.01/197.04 - Step 6: Final answer
x = 191.92
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.