Finding the Fourth Proportional to 157.08, 235.68 and 84.99
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Solution
The fourth proportional to 157.08, 235.68 and 84.99 is: 127.52
Step by Step Solution
- Step 1: Write the proportion equation
157.08 : 235.68 = 84.99 : x - Step 2: Convert to fraction form
157.08/235.68 = 84.99/x - Step 3: Cross multiply
157.08x = 235.68 × 84.99 - Step 4: Simplify right side
157.08x = 20,030.44 - Step 5: Solve for x
x = 20,030.44/157.08 - Step 6: Final answer
x = 127.52
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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.