Finding the Fourth Proportional to 79.99, 119.97 and 51.10
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Solution
The fourth proportional to 79.99, 119.97 and 51.10 is: 76.64
Step by Step Solution
- Step 1: Write the proportion equation
79.99 : 119.97 = 51.10 : x - Step 2: Convert to fraction form
79.99/119.97 = 51.10/x - Step 3: Cross multiply
79.99x = 119.97 × 51.10 - Step 4: Simplify right side
79.99x = 6,130.47 - Step 5: Solve for x
x = 6,130.47/79.99 - Step 6: Final answer
x = 76.64
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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.