Finding the Fourth Proportional to 202.12, 278.88 and 114.79
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Solution
The fourth proportional to 202.12, 278.88 and 114.79 is: 158.38
Step by Step Solution
- Step 1: Write the proportion equation
202.12 : 278.88 = 114.79 : x - Step 2: Convert to fraction form
202.12/278.88 = 114.79/x - Step 3: Cross multiply
202.12x = 278.88 × 114.79 - Step 4: Simplify right side
202.12x = 32,011.24 - Step 5: Solve for x
x = 32,011.24/202.12 - Step 6: Final answer
x = 158.38
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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.