Finding the Fourth Proportional to 79.22, 118.87 and 79.00
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Solution
The fourth proportional to 79.22, 118.87 and 79.00 is: 118.53
Step by Step Solution
- Step 1: Write the proportion equation
79.22 : 118.87 = 79.00 : x - Step 2: Convert to fraction form
79.22/118.87 = 79.00/x - Step 3: Cross multiply
79.22x = 118.87 × 79.00 - Step 4: Simplify right side
79.22x = 9,390.24 - Step 5: Solve for x
x = 9,390.24/79.22 - Step 6: Final answer
x = 118.53
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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.