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Finding the Fourth Proportional to 231.56, 348.72 and 201.49

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Solution

The fourth proportional to 231.56, 348.72 and 201.49 is: 303.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    231.56 : 348.72 = 201.49 : x
  2. Step 2: Convert to fraction form
    231.56/348.72 = 201.49/x
  3. Step 3: Cross multiply
    231.56x = 348.72 × 201.49
  4. Step 4: Simplify right side
    231.56x = 70,263.93
  5. Step 5: Solve for x
    x = 70,263.93/231.56
  6. Step 6: Final answer
    x = 303.43

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.