Finding the Fourth Proportional to 202.13, 279.08 and 143.81
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Solution
The fourth proportional to 202.13, 279.08 and 143.81 is: 198.55
Step by Step Solution
- Step 1: Write the proportion equation
202.13 : 279.08 = 143.81 : x - Step 2: Convert to fraction form
202.13/279.08 = 143.81/x - Step 3: Cross multiply
202.13x = 279.08 × 143.81 - Step 4: Simplify right side
202.13x = 40,132.38 - Step 5: Solve for x
x = 40,132.38/202.13 - Step 6: Final answer
x = 198.55
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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.