Finding the Fourth Proportional to 368.78, 508.91 and 202.99
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Solution
The fourth proportional to 368.78, 508.91 and 202.99 is: 280.12
Step by Step Solution
- Step 1: Write the proportion equation
368.78 : 508.91 = 202.99 : x - Step 2: Convert to fraction form
368.78/508.91 = 202.99/x - Step 3: Cross multiply
368.78x = 508.91 × 202.99 - Step 4: Simplify right side
368.78x = 103,303.13 - Step 5: Solve for x
x = 103,303.13/368.78 - Step 6: Final answer
x = 280.12
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.