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Finding the Fourth Proportional to 400.79, 552.96 and 243.37

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Solution

The fourth proportional to 400.79, 552.96 and 243.37 is: 335.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.79 : 552.96 = 243.37 : x
  2. Step 2: Convert to fraction form
    400.79/552.96 = 243.37/x
  3. Step 3: Cross multiply
    400.79x = 552.96 × 243.37
  4. Step 4: Simplify right side
    400.79x = 134,571.11
  5. Step 5: Solve for x
    x = 134,571.11/400.79
  6. Step 6: Final answer
    x = 335.76

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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.