Finding the Fourth Proportional to 207.68, 286.63 and 152.70
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Solution
The fourth proportional to 207.68, 286.63 and 152.70 is: 210.75
Step by Step Solution
- Step 1: Write the proportion equation
207.68 : 286.63 = 152.70 : x - Step 2: Convert to fraction form
207.68/286.63 = 152.70/x - Step 3: Cross multiply
207.68x = 286.63 × 152.70 - Step 4: Simplify right side
207.68x = 43,766.94 - Step 5: Solve for x
x = 43,766.94/207.68 - Step 6: Final answer
x = 210.75
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.