Finding the Fourth Proportional to 79.53, 119.07 and 76.20
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Solution
The fourth proportional to 79.53, 119.07 and 76.20 is: 114.08
Step by Step Solution
- Step 1: Write the proportion equation
79.53 : 119.07 = 76.20 : x - Step 2: Convert to fraction form
79.53/119.07 = 76.20/x - Step 3: Cross multiply
79.53x = 119.07 × 76.20 - Step 4: Simplify right side
79.53x = 9,073.13 - Step 5: Solve for x
x = 9,073.13/79.53 - Step 6: Final answer
x = 114.08
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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.