Finding the Fourth Proportional to 422.60, 633.99 and 353.75
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Solution
The fourth proportional to 422.60, 633.99 and 353.75 is: 530.70
Step by Step Solution
- Step 1: Write the proportion equation
422.60 : 633.99 = 353.75 : x - Step 2: Convert to fraction form
422.60/633.99 = 353.75/x - Step 3: Cross multiply
422.60x = 633.99 × 353.75 - Step 4: Simplify right side
422.60x = 224,273.96 - Step 5: Solve for x
x = 224,273.96/422.60 - Step 6: Final answer
x = 530.70
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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.