Finding the Fourth Proportional to 422.12, 633.36 and 133.58
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Solution
The fourth proportional to 422.12, 633.36 and 133.58 is: 200.43
Step by Step Solution
- Step 1: Write the proportion equation
422.12 : 633.36 = 133.58 : x - Step 2: Convert to fraction form
422.12/633.36 = 133.58/x - Step 3: Cross multiply
422.12x = 633.36 × 133.58 - Step 4: Simplify right side
422.12x = 84,604.23 - Step 5: Solve for x
x = 84,604.23/422.12 - Step 6: Final answer
x = 200.43
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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.