Finding the Fourth Proportional to 392.74, 541.99 and 218.08
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Solution
The fourth proportional to 392.74, 541.99 and 218.08 is: 300.96
Step by Step Solution
- Step 1: Write the proportion equation
392.74 : 541.99 = 218.08 : x - Step 2: Convert to fraction form
392.74/541.99 = 218.08/x - Step 3: Cross multiply
392.74x = 541.99 × 218.08 - Step 4: Simplify right side
392.74x = 118,197.18 - Step 5: Solve for x
x = 118,197.18/392.74 - Step 6: Final answer
x = 300.96
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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.