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Finding the Fourth Proportional to 280.44, 423.18 and 270.27

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Solution

The fourth proportional to 280.44, 423.18 and 270.27 is: 407.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    280.44 : 423.18 = 270.27 : x
  2. Step 2: Convert to fraction form
    280.44/423.18 = 270.27/x
  3. Step 3: Cross multiply
    280.44x = 423.18 × 270.27
  4. Step 4: Simplify right side
    280.44x = 114,371.42
  5. Step 5: Solve for x
    x = 114,371.42/280.44
  6. Step 6: Final answer
    x = 407.84

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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.