Finding the Fourth Proportional to 79.02, 118.53 and 51.99
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Solution
The fourth proportional to 79.02, 118.53 and 51.99 is: 77.98
Step by Step Solution
- Step 1: Write the proportion equation
79.02 : 118.53 = 51.99 : x - Step 2: Convert to fraction form
79.02/118.53 = 51.99/x - Step 3: Cross multiply
79.02x = 118.53 × 51.99 - Step 4: Simplify right side
79.02x = 6,161.93 - Step 5: Solve for x
x = 6,161.93/79.02 - Step 6: Final answer
x = 77.98
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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.