Finding the Fourth Proportional to 261.08, 390.68 and 195.68
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Solution
The fourth proportional to 261.08, 390.68 and 195.68 is: 292.82
Step by Step Solution
- Step 1: Write the proportion equation
261.08 : 390.68 = 195.68 : x - Step 2: Convert to fraction form
261.08/390.68 = 195.68/x - Step 3: Cross multiply
261.08x = 390.68 × 195.68 - Step 4: Simplify right side
261.08x = 76,448.26 - Step 5: Solve for x
x = 76,448.26/261.08 - Step 6: Final answer
x = 292.82
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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.