Finding the Fourth Proportional to 158.62, 237.80 and 90.05
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Solution
The fourth proportional to 158.62, 237.80 and 90.05 is: 134.99
Step by Step Solution
- Step 1: Write the proportion equation
158.62 : 237.80 = 90.05 : x - Step 2: Convert to fraction form
158.62/237.80 = 90.05/x - Step 3: Cross multiply
158.62x = 237.80 × 90.05 - Step 4: Simplify right side
158.62x = 21,413.31 - Step 5: Solve for x
x = 21,413.31/158.62 - Step 6: Final answer
x = 134.99
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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.