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Finding the Fourth Proportional to 265.22, 399.45 and 201.54

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Solution

The fourth proportional to 265.22, 399.45 and 201.54 is: 303.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.22 : 399.45 = 201.54 : x
  2. Step 2: Convert to fraction form
    265.22/399.45 = 201.54/x
  3. Step 3: Cross multiply
    265.22x = 399.45 × 201.54
  4. Step 4: Simplify right side
    265.22x = 80,505.15
  5. Step 5: Solve for x
    x = 80,505.15/265.22
  6. Step 6: Final answer
    x = 303.54

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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.