Finding the Fourth Proportional to 210.63, 315.99 and 73.74
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Solution
The fourth proportional to 210.63, 315.99 and 73.74 is: 110.63
Step by Step Solution
- Step 1: Write the proportion equation
210.63 : 315.99 = 73.74 : x - Step 2: Convert to fraction form
210.63/315.99 = 73.74/x - Step 3: Cross multiply
210.63x = 315.99 × 73.74 - Step 4: Simplify right side
210.63x = 23,301.10 - Step 5: Solve for x
x = 23,301.10/210.63 - Step 6: Final answer
x = 110.63
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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.