Finding the Fourth Proportional to 130.70, 180.42 and 84.08
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Solution
The fourth proportional to 130.70, 180.42 and 84.08 is: 116.07
Step by Step Solution
- Step 1: Write the proportion equation
130.70 : 180.42 = 84.08 : x - Step 2: Convert to fraction form
130.70/180.42 = 84.08/x - Step 3: Cross multiply
130.70x = 180.42 × 84.08 - Step 4: Simplify right side
130.70x = 15,169.71 - Step 5: Solve for x
x = 15,169.71/130.70 - Step 6: Final answer
x = 116.07
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.