Finding the Fourth Proportional to 79.70, 119.43 and 52.26
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Solution
The fourth proportional to 79.70, 119.43 and 52.26 is: 78.32
Step by Step Solution
- Step 1: Write the proportion equation
79.70 : 119.43 = 52.26 : x - Step 2: Convert to fraction form
79.70/119.43 = 52.26/x - Step 3: Cross multiply
79.70x = 119.43 × 52.26 - Step 4: Simplify right side
79.70x = 6,241.41 - Step 5: Solve for x
x = 6,241.41/79.70 - Step 6: Final answer
x = 78.32
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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.