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Finding the Fourth Proportional to 300.46, 452.20 and 270.64

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Solution

The fourth proportional to 300.46, 452.20 and 270.64 is: 407.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.46 : 452.20 = 270.64 : x
  2. Step 2: Convert to fraction form
    300.46/452.20 = 270.64/x
  3. Step 3: Cross multiply
    300.46x = 452.20 × 270.64
  4. Step 4: Simplify right side
    300.46x = 122,383.41
  5. Step 5: Solve for x
    x = 122,383.41/300.46
  6. Step 6: Final answer
    x = 407.32

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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.