Finding the Fourth Proportional to 475.08, 655.10 and 308.99
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Solution
The fourth proportional to 475.08, 655.10 and 308.99 is: 426.07
Step by Step Solution
- Step 1: Write the proportion equation
475.08 : 655.10 = 308.99 : x - Step 2: Convert to fraction form
475.08/655.10 = 308.99/x - Step 3: Cross multiply
475.08x = 655.10 × 308.99 - Step 4: Simplify right side
475.08x = 202,415.73 - Step 5: Solve for x
x = 202,415.73/475.08 - Step 6: Final answer
x = 426.07
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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.