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Finding the Fourth Proportional to 371.16, 556.38 and 178.56

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Solution

The fourth proportional to 371.16, 556.38 and 178.56 is: 267.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.16 : 556.38 = 178.56 : x
  2. Step 2: Convert to fraction form
    371.16/556.38 = 178.56/x
  3. Step 3: Cross multiply
    371.16x = 556.38 × 178.56
  4. Step 4: Simplify right side
    371.16x = 99,347.21
  5. Step 5: Solve for x
    x = 99,347.21/371.16
  6. Step 6: Final answer
    x = 267.67

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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.