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Finding the Fourth Proportional to 437.28, 656.02 and 163.38

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Solution

The fourth proportional to 437.28, 656.02 and 163.38 is: 245.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.28 : 656.02 = 163.38 : x
  2. Step 2: Convert to fraction form
    437.28/656.02 = 163.38/x
  3. Step 3: Cross multiply
    437.28x = 656.02 × 163.38
  4. Step 4: Simplify right side
    437.28x = 107,180.55
  5. Step 5: Solve for x
    x = 107,180.55/437.28
  6. Step 6: Final answer
    x = 245.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.