Finding the Fourth Proportional to 392.58, 541.68 and 252.68
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Solution
The fourth proportional to 392.58, 541.68 and 252.68 is: 348.65
Step by Step Solution
- Step 1: Write the proportion equation
392.58 : 541.68 = 252.68 : x - Step 2: Convert to fraction form
392.58/541.68 = 252.68/x - Step 3: Cross multiply
392.58x = 541.68 × 252.68 - Step 4: Simplify right side
392.58x = 136,871.70 - Step 5: Solve for x
x = 136,871.70/392.58 - Step 6: Final answer
x = 348.65
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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.