Finding the Fourth Proportional to 79.08, 118.68 and 73.68
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Solution
The fourth proportional to 79.08, 118.68 and 73.68 is: 110.58
Step by Step Solution
- Step 1: Write the proportion equation
79.08 : 118.68 = 73.68 : x - Step 2: Convert to fraction form
79.08/118.68 = 73.68/x - Step 3: Cross multiply
79.08x = 118.68 × 73.68 - Step 4: Simplify right side
79.08x = 8,744.34 - Step 5: Solve for x
x = 8,744.34/79.08 - Step 6: Final answer
x = 110.58
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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.