Finding the Fourth Proportional to 331.28, 457.08 and 303.68
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Solution
The fourth proportional to 331.28, 457.08 and 303.68 is: 419.00
Step by Step Solution
- Step 1: Write the proportion equation
331.28 : 457.08 = 303.68 : x - Step 2: Convert to fraction form
331.28/457.08 = 303.68/x - Step 3: Cross multiply
331.28x = 457.08 × 303.68 - Step 4: Simplify right side
331.28x = 138,806.05 - Step 5: Solve for x
x = 138,806.05/331.28 - Step 6: Final answer
x = 419.00
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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.