Finding the Fourth Proportional to 309.79, 464 and 126.63
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Solution
The fourth proportional to 309.79, 464 and 126.63 is: 189.66
Step by Step Solution
- Step 1: Write the proportion equation
309.79 : 464 = 126.63 : x - Step 2: Convert to fraction form
309.79/464 = 126.63/x - Step 3: Cross multiply
309.79x = 464 × 126.63 - Step 4: Simplify right side
309.79x = 58,756.32 - Step 5: Solve for x
x = 58,756.32/309.79 - Step 6: Final answer
x = 189.66
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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.