Finding the Fourth Proportional to 371.12, 511.84 and 305.51
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Solution
The fourth proportional to 371.12, 511.84 and 305.51 is: 421.35
Step by Step Solution
- Step 1: Write the proportion equation
371.12 : 511.84 = 305.51 : x - Step 2: Convert to fraction form
371.12/511.84 = 305.51/x - Step 3: Cross multiply
371.12x = 511.84 × 305.51 - Step 4: Simplify right side
371.12x = 156,372.24 - Step 5: Solve for x
x = 156,372.24/371.12 - Step 6: Final answer
x = 421.35
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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.