Finding the Fourth Proportional to 528.99, 729.99 and 307.92
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Solution
The fourth proportional to 528.99, 729.99 and 307.92 is: 424.92
Step by Step Solution
- Step 1: Write the proportion equation
528.99 : 729.99 = 307.92 : x - Step 2: Convert to fraction form
528.99/729.99 = 307.92/x - Step 3: Cross multiply
528.99x = 729.99 × 307.92 - Step 4: Simplify right side
528.99x = 224,778.52 - Step 5: Solve for x
x = 224,778.52/528.99 - Step 6: Final answer
x = 424.92
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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.