Finding the Fourth Proportional to 415.02, 621.99 and 312.96
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Solution
The fourth proportional to 415.02, 621.99 and 312.96 is: 469.03
Step by Step Solution
- Step 1: Write the proportion equation
415.02 : 621.99 = 312.96 : x - Step 2: Convert to fraction form
415.02/621.99 = 312.96/x - Step 3: Cross multiply
415.02x = 621.99 × 312.96 - Step 4: Simplify right side
415.02x = 194,657.99 - Step 5: Solve for x
x = 194,657.99/415.02 - Step 6: Final answer
x = 469.03
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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.