Finding the Fourth Proportional to 138.59, 207.52 and 73.46
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Solution
The fourth proportional to 138.59, 207.52 and 73.46 is: 109.99
Step by Step Solution
- Step 1: Write the proportion equation
138.59 : 207.52 = 73.46 : x - Step 2: Convert to fraction form
138.59/207.52 = 73.46/x - Step 3: Cross multiply
138.59x = 207.52 × 73.46 - Step 4: Simplify right side
138.59x = 15,243.59 - Step 5: Solve for x
x = 15,243.59/138.59 - Step 6: Final answer
x = 109.99
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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.