Finding the Fourth Proportional to 149.94, 207.20 and 135.08
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Solution
The fourth proportional to 149.94, 207.20 and 135.08 is: 186.67
Step by Step Solution
- Step 1: Write the proportion equation
149.94 : 207.20 = 135.08 : x - Step 2: Convert to fraction form
149.94/207.20 = 135.08/x - Step 3: Cross multiply
149.94x = 207.20 × 135.08 - Step 4: Simplify right side
149.94x = 27,988.58 - Step 5: Solve for x
x = 27,988.58/149.94 - Step 6: Final answer
x = 186.67
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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.