Finding the Fourth Proportional to 398.93, 549.79 and 393.26
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Solution
The fourth proportional to 398.93, 549.79 and 393.26 is: 541.97
Step by Step Solution
- Step 1: Write the proportion equation
398.93 : 549.79 = 393.26 : x - Step 2: Convert to fraction form
398.93/549.79 = 393.26/x - Step 3: Cross multiply
398.93x = 549.79 × 393.26 - Step 4: Simplify right side
398.93x = 216,206.68 - Step 5: Solve for x
x = 216,206.68/398.93 - Step 6: Final answer
x = 541.97
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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.