Finding the Fourth Proportional to 306.64, 422.99 and 250.70
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Solution
The fourth proportional to 306.64, 422.99 and 250.70 is: 345.82
Step by Step Solution
- Step 1: Write the proportion equation
306.64 : 422.99 = 250.70 : x - Step 2: Convert to fraction form
306.64/422.99 = 250.70/x - Step 3: Cross multiply
306.64x = 422.99 × 250.70 - Step 4: Simplify right side
306.64x = 106,043.59 - Step 5: Solve for x
x = 106,043.59/306.64 - Step 6: Final answer
x = 345.82
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.