Finding the Fourth Proportional to 157.10, 235.64 and 135.63
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Solution
The fourth proportional to 157.10, 235.64 and 135.63 is: 203.45
Step by Step Solution
- Step 1: Write the proportion equation
157.10 : 235.64 = 135.63 : x - Step 2: Convert to fraction form
157.10/235.64 = 135.63/x - Step 3: Cross multiply
157.10x = 235.64 × 135.63 - Step 4: Simplify right side
157.10x = 31,960.19 - Step 5: Solve for x
x = 31,960.19/157.10 - Step 6: Final answer
x = 203.45
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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.