Finding the Fourth Proportional to 202.31, 279.19 and 115.00
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Solution
The fourth proportional to 202.31, 279.19 and 115.00 is: 158.70
Step by Step Solution
- Step 1: Write the proportion equation
202.31 : 279.19 = 115.00 : x - Step 2: Convert to fraction form
202.31/279.19 = 115.00/x - Step 3: Cross multiply
202.31x = 279.19 × 115.00 - Step 4: Simplify right side
202.31x = 32,107.34 - Step 5: Solve for x
x = 32,107.34/202.31 - Step 6: Final answer
x = 158.70
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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.