Finding the Fourth Proportional to 157.80, 235.11 and 155.58
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Solution
The fourth proportional to 157.80, 235.11 and 155.58 is: 231.80
Step by Step Solution
- Step 1: Write the proportion equation
157.80 : 235.11 = 155.58 : x - Step 2: Convert to fraction form
157.80/235.11 = 155.58/x - Step 3: Cross multiply
157.80x = 235.11 × 155.58 - Step 4: Simplify right side
157.80x = 36,578.41 - Step 5: Solve for x
x = 36,578.41/157.80 - Step 6: Final answer
x = 231.80
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.