Finding the Fourth Proportional to 455.10, 627.99 and 307.68
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Solution
The fourth proportional to 455.10, 627.99 and 307.68 is: 424.57
Step by Step Solution
- Step 1: Write the proportion equation
455.10 : 627.99 = 307.68 : x - Step 2: Convert to fraction form
455.10/627.99 = 307.68/x - Step 3: Cross multiply
455.10x = 627.99 × 307.68 - Step 4: Simplify right side
455.10x = 193,219.96 - Step 5: Solve for x
x = 193,219.96/455.10 - Step 6: Final answer
x = 424.57
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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.