Finding the Fourth Proportional to 499.67, 689.58 and 278.63
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Solution
The fourth proportional to 499.67, 689.58 and 278.63 is: 384.53
Step by Step Solution
- Step 1: Write the proportion equation
499.67 : 689.58 = 278.63 : x - Step 2: Convert to fraction form
499.67/689.58 = 278.63/x - Step 3: Cross multiply
499.67x = 689.58 × 278.63 - Step 4: Simplify right side
499.67x = 192,134.23 - Step 5: Solve for x
x = 192,134.23/499.67 - Step 6: Final answer
x = 384.53
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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.