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Finding the Fourth Proportional to 215.67, 325.20 and 201.32

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Solution

The fourth proportional to 215.67, 325.20 and 201.32 is: 303.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    215.67 : 325.20 = 201.32 : x
  2. Step 2: Convert to fraction form
    215.67/325.20 = 201.32/x
  3. Step 3: Cross multiply
    215.67x = 325.20 × 201.32
  4. Step 4: Simplify right side
    215.67x = 65,467.64
  5. Step 5: Solve for x
    x = 65,467.64/215.67
  6. Step 6: Final answer
    x = 303.55

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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.