Finding the Fourth Proportional to 371.08, 511.80 and 305.44
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Solution
The fourth proportional to 371.08, 511.80 and 305.44 is: 421.27
Step by Step Solution
- Step 1: Write the proportion equation
371.08 : 511.80 = 305.44 : x - Step 2: Convert to fraction form
371.08/511.80 = 305.44/x - Step 3: Cross multiply
371.08x = 511.80 × 305.44 - Step 4: Simplify right side
371.08x = 156,324.19 - Step 5: Solve for x
x = 156,324.19/371.08 - Step 6: Final answer
x = 421.27
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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.