Finding the Fourth Proportional to 79.19, 118.68 and 58.74
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Solution
The fourth proportional to 79.19, 118.68 and 58.74 is: 88.03
Step by Step Solution
- Step 1: Write the proportion equation
79.19 : 118.68 = 58.74 : x - Step 2: Convert to fraction form
79.19/118.68 = 58.74/x - Step 3: Cross multiply
79.19x = 118.68 × 58.74 - Step 4: Simplify right side
79.19x = 6,971.26 - Step 5: Solve for x
x = 6,971.26/79.19 - Step 6: Final answer
x = 88.03
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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.