Finding the Fourth Proportional to 475.17, 655.74 and 288.63
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Solution
The fourth proportional to 475.17, 655.74 and 288.63 is: 398.31
Step by Step Solution
- Step 1: Write the proportion equation
475.17 : 655.74 = 288.63 : x - Step 2: Convert to fraction form
475.17/655.74 = 288.63/x - Step 3: Cross multiply
475.17x = 655.74 × 288.63 - Step 4: Simplify right side
475.17x = 189,266.24 - Step 5: Solve for x
x = 189,266.24/475.17 - Step 6: Final answer
x = 398.31
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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.