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Finding the Fourth Proportional to 316.96, 475.57 and 134.41

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Solution

The fourth proportional to 316.96, 475.57 and 134.41 is: 201.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    316.96 : 475.57 = 134.41 : x
  2. Step 2: Convert to fraction form
    316.96/475.57 = 134.41/x
  3. Step 3: Cross multiply
    316.96x = 475.57 × 134.41
  4. Step 4: Simplify right side
    316.96x = 63,921.23
  5. Step 5: Solve for x
    x = 63,921.23/316.96
  6. Step 6: Final answer
    x = 201.67

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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.