Finding the Fourth Proportional to 154.49, 213.21 and 88.99
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Solution
The fourth proportional to 154.49, 213.21 and 88.99 is: 122.81
Step by Step Solution
- Step 1: Write the proportion equation
154.49 : 213.21 = 88.99 : x - Step 2: Convert to fraction form
154.49/213.21 = 88.99/x - Step 3: Cross multiply
154.49x = 213.21 × 88.99 - Step 4: Simplify right side
154.49x = 18,973.02 - Step 5: Solve for x
x = 18,973.02/154.49 - Step 6: Final answer
x = 122.81
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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.