Finding the Fourth Proportional to 202.91, 279.99 and 115.58
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Solution
The fourth proportional to 202.91, 279.99 and 115.58 is: 159.49
Step by Step Solution
- Step 1: Write the proportion equation
202.91 : 279.99 = 115.58 : x - Step 2: Convert to fraction form
202.91/279.99 = 115.58/x - Step 3: Cross multiply
202.91x = 279.99 × 115.58 - Step 4: Simplify right side
202.91x = 32,361.94 - Step 5: Solve for x
x = 32,361.94/202.91 - Step 6: Final answer
x = 159.49
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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.