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Finding the Fourth Proportional to 264.20, 396.25 and 161.53

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Solution

The fourth proportional to 264.20, 396.25 and 161.53 is: 242.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.20 : 396.25 = 161.53 : x
  2. Step 2: Convert to fraction form
    264.20/396.25 = 161.53/x
  3. Step 3: Cross multiply
    264.20x = 396.25 × 161.53
  4. Step 4: Simplify right side
    264.20x = 64,004.87
  5. Step 5: Solve for x
    x = 64,004.87/264.20
  6. Step 6: Final answer
    x = 242.26

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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.