Finding the Fourth Proportional to 138.02, 207.10 and 60.99
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Solution
The fourth proportional to 138.02, 207.10 and 60.99 is: 91.52
Step by Step Solution
- Step 1: Write the proportion equation
138.02 : 207.10 = 60.99 : x - Step 2: Convert to fraction form
138.02/207.10 = 60.99/x - Step 3: Cross multiply
138.02x = 207.10 × 60.99 - Step 4: Simplify right side
138.02x = 12,631.11 - Step 5: Solve for x
x = 12,631.11/138.02 - Step 6: Final answer
x = 91.52
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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.