Finding the Fourth Proportional to 79.08, 118.52 and 38.49
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Solution
The fourth proportional to 79.08, 118.52 and 38.49 is: 57.69
Step by Step Solution
- Step 1: Write the proportion equation
79.08 : 118.52 = 38.49 : x - Step 2: Convert to fraction form
79.08/118.52 = 38.49/x - Step 3: Cross multiply
79.08x = 118.52 × 38.49 - Step 4: Simplify right side
79.08x = 4,561.83 - Step 5: Solve for x
x = 4,561.83/79.08 - Step 6: Final answer
x = 57.69
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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.