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Finding the Fourth Proportional to 251.11, 346.53 and 146.20

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Solution

The fourth proportional to 251.11, 346.53 and 146.20 is: 201.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.11 : 346.53 = 146.20 : x
  2. Step 2: Convert to fraction form
    251.11/346.53 = 146.20/x
  3. Step 3: Cross multiply
    251.11x = 346.53 × 146.20
  4. Step 4: Simplify right side
    251.11x = 50,662.69
  5. Step 5: Solve for x
    x = 50,662.69/251.11
  6. Step 6: Final answer
    x = 201.75

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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.