Finding the Fourth Proportional to 135.46, 203.22 and 66.99
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Solution
The fourth proportional to 135.46, 203.22 and 66.99 is: 100.50
Step by Step Solution
- Step 1: Write the proportion equation
135.46 : 203.22 = 66.99 : x - Step 2: Convert to fraction form
135.46/203.22 = 66.99/x - Step 3: Cross multiply
135.46x = 203.22 × 66.99 - Step 4: Simplify right side
135.46x = 13,613.71 - Step 5: Solve for x
x = 13,613.71/135.46 - Step 6: Final answer
x = 100.50
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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.