Finding the Fourth Proportional to 203.68, 305.70 and 130.60
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Solution
The fourth proportional to 203.68, 305.70 and 130.60 is: 196.02
Step by Step Solution
- Step 1: Write the proportion equation
203.68 : 305.70 = 130.60 : x - Step 2: Convert to fraction form
203.68/305.70 = 130.60/x - Step 3: Cross multiply
203.68x = 305.70 × 130.60 - Step 4: Simplify right side
203.68x = 39,924.42 - Step 5: Solve for x
x = 39,924.42/203.68 - Step 6: Final answer
x = 196.02
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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.