Finding the Fourth Proportional to 157.02, 235.74 and 84.93
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Solution
The fourth proportional to 157.02, 235.74 and 84.93 is: 127.51
Step by Step Solution
- Step 1: Write the proportion equation
157.02 : 235.74 = 84.93 : x - Step 2: Convert to fraction form
157.02/235.74 = 84.93/x - Step 3: Cross multiply
157.02x = 235.74 × 84.93 - Step 4: Simplify right side
157.02x = 20,021.40 - Step 5: Solve for x
x = 20,021.40/157.02 - Step 6: Final answer
x = 127.51
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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.