Finding the Fourth Proportional to 138.08, 207.03 and 60.99
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Solution
The fourth proportional to 138.08, 207.03 and 60.99 is: 91.45
Step by Step Solution
- Step 1: Write the proportion equation
138.08 : 207.03 = 60.99 : x - Step 2: Convert to fraction form
138.08/207.03 = 60.99/x - Step 3: Cross multiply
138.08x = 207.03 × 60.99 - Step 4: Simplify right side
138.08x = 12,626.76 - Step 5: Solve for x
x = 12,626.76/138.08 - Step 6: Final answer
x = 91.45
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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.