Finding the Fourth Proportional to 306.60, 422.93 and 188.63
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Solution
The fourth proportional to 306.60, 422.93 and 188.63 is: 260.20
Step by Step Solution
- Step 1: Write the proportion equation
306.60 : 422.93 = 188.63 : x - Step 2: Convert to fraction form
306.60/422.93 = 188.63/x - Step 3: Cross multiply
306.60x = 422.93 × 188.63 - Step 4: Simplify right side
306.60x = 79,777.29 - Step 5: Solve for x
x = 79,777.29/306.60 - Step 6: Final answer
x = 260.20
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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.