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Finding the Fourth Proportional to 284.02, 426.03 and 255.70

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Solution

The fourth proportional to 284.02, 426.03 and 255.70 is: 383.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.02 : 426.03 = 255.70 : x
  2. Step 2: Convert to fraction form
    284.02/426.03 = 255.70/x
  3. Step 3: Cross multiply
    284.02x = 426.03 × 255.70
  4. Step 4: Simplify right side
    284.02x = 108,935.87
  5. Step 5: Solve for x
    x = 108,935.87/284.02
  6. Step 6: Final answer
    x = 383.55

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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.