Finding the Fourth Proportional to 161.58, 242.19 and 74.98
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Solution
The fourth proportional to 161.58, 242.19 and 74.98 is: 112.38
Step by Step Solution
- Step 1: Write the proportion equation
161.58 : 242.19 = 74.98 : x - Step 2: Convert to fraction form
161.58/242.19 = 74.98/x - Step 3: Cross multiply
161.58x = 242.19 × 74.98 - Step 4: Simplify right side
161.58x = 18,158.99 - Step 5: Solve for x
x = 18,158.99/161.58 - Step 6: Final answer
x = 112.38
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.