Finding the Fourth Proportional to 415.36, 621.84 and 313.08
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Solution
The fourth proportional to 415.36, 621.84 and 313.08 is: 468.72
Step by Step Solution
- Step 1: Write the proportion equation
415.36 : 621.84 = 313.08 : x - Step 2: Convert to fraction form
415.36/621.84 = 313.08/x - Step 3: Cross multiply
415.36x = 621.84 × 313.08 - Step 4: Simplify right side
415.36x = 194,685.67 - Step 5: Solve for x
x = 194,685.67/415.36 - Step 6: Final answer
x = 468.72
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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.