Finding the Fourth Proportional to 158.62, 219.18 and 139.54
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Solution
The fourth proportional to 158.62, 219.18 and 139.54 is: 192.82
Step by Step Solution
- Step 1: Write the proportion equation
158.62 : 219.18 = 139.54 : x - Step 2: Convert to fraction form
158.62/219.18 = 139.54/x - Step 3: Cross multiply
158.62x = 219.18 × 139.54 - Step 4: Simplify right side
158.62x = 30,584.38 - Step 5: Solve for x
x = 30,584.38/158.62 - Step 6: Final answer
x = 192.82
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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.