Finding the Fourth Proportional to 117.99, 176.91 and 79.49
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Solution
The fourth proportional to 117.99, 176.91 and 79.49 is: 119.18
Step by Step Solution
- Step 1: Write the proportion equation
117.99 : 176.91 = 79.49 : x - Step 2: Convert to fraction form
117.99/176.91 = 79.49/x - Step 3: Cross multiply
117.99x = 176.91 × 79.49 - Step 4: Simplify right side
117.99x = 14,062.58 - Step 5: Solve for x
x = 14,062.58/117.99 - Step 6: Final answer
x = 119.18
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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.