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Finding the Fourth Proportional to 284.52, 425.89 and 197.42

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Solution

The fourth proportional to 284.52, 425.89 and 197.42 is: 295.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.52 : 425.89 = 197.42 : x
  2. Step 2: Convert to fraction form
    284.52/425.89 = 197.42/x
  3. Step 3: Cross multiply
    284.52x = 425.89 × 197.42
  4. Step 4: Simplify right side
    284.52x = 84,077.32
  5. Step 5: Solve for x
    x = 84,077.32/284.52
  6. Step 6: Final answer
    x = 295.50

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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.