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Finding the Fourth Proportional to 296.96, 409.99 and 203.67

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Solution

The fourth proportional to 296.96, 409.99 and 203.67 is: 281.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    296.96 : 409.99 = 203.67 : x
  2. Step 2: Convert to fraction form
    296.96/409.99 = 203.67/x
  3. Step 3: Cross multiply
    296.96x = 409.99 × 203.67
  4. Step 4: Simplify right side
    296.96x = 83,502.15
  5. Step 5: Solve for x
    x = 83,502.15/296.96
  6. Step 6: Final answer
    x = 281.19

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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.