Finding the Fourth Proportional to 202.03, 302.99 and 86.60
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Solution
The fourth proportional to 202.03, 302.99 and 86.60 is: 129.88
Step by Step Solution
- Step 1: Write the proportion equation
202.03 : 302.99 = 86.60 : x - Step 2: Convert to fraction form
202.03/302.99 = 86.60/x - Step 3: Cross multiply
202.03x = 302.99 × 86.60 - Step 4: Simplify right side
202.03x = 26,239.75 - Step 5: Solve for x
x = 26,239.75/202.03 - Step 6: Final answer
x = 129.88
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.