Finding the Fourth Proportional to 108.68, 162.99 and 47.75
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Solution
The fourth proportional to 108.68, 162.99 and 47.75 is: 71.61
Step by Step Solution
- Step 1: Write the proportion equation
108.68 : 162.99 = 47.75 : x - Step 2: Convert to fraction form
108.68/162.99 = 47.75/x - Step 3: Cross multiply
108.68x = 162.99 × 47.75 - Step 4: Simplify right side
108.68x = 7,781.96 - Step 5: Solve for x
x = 7,781.96/108.68 - Step 6: Final answer
x = 71.61
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.