Finding the Fourth Proportional to 149.79, 206.73 and 84.32
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Solution
The fourth proportional to 149.79, 206.73 and 84.32 is: 116.37
Step by Step Solution
- Step 1: Write the proportion equation
149.79 : 206.73 = 84.32 : x - Step 2: Convert to fraction form
149.79/206.73 = 84.32/x - Step 3: Cross multiply
149.79x = 206.73 × 84.32 - Step 4: Simplify right side
149.79x = 17,430.44 - Step 5: Solve for x
x = 17,430.44/149.79 - Step 6: Final answer
x = 116.37
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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.