Finding the Fourth Proportional to 206.68, 310.62 and 134.99
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Solution
The fourth proportional to 206.68, 310.62 and 134.99 is: 202.88
Step by Step Solution
- Step 1: Write the proportion equation
206.68 : 310.62 = 134.99 : x - Step 2: Convert to fraction form
206.68/310.62 = 134.99/x - Step 3: Cross multiply
206.68x = 310.62 × 134.99 - Step 4: Simplify right side
206.68x = 41,931.71 - Step 5: Solve for x
x = 41,931.71/206.68 - Step 6: Final answer
x = 202.88
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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.