Finding the Fourth Proportional to 122.99, 184.48 and 79.68
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Solution
The fourth proportional to 122.99, 184.48 and 79.68 is: 119.53
Step by Step Solution
- Step 1: Write the proportion equation
122.99 : 184.48 = 79.68 : x - Step 2: Convert to fraction form
122.99/184.48 = 79.68/x - Step 3: Cross multiply
122.99x = 184.48 × 79.68 - Step 4: Simplify right side
122.99x = 14,699.86 - Step 5: Solve for x
x = 14,699.86/122.99 - Step 6: Final answer
x = 119.53
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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.