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Finding the Fourth Proportional to 284.89, 393.27 and 196.50

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Solution

The fourth proportional to 284.89, 393.27 and 196.50 is: 271.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.89 : 393.27 = 196.50 : x
  2. Step 2: Convert to fraction form
    284.89/393.27 = 196.50/x
  3. Step 3: Cross multiply
    284.89x = 393.27 × 196.50
  4. Step 4: Simplify right side
    284.89x = 77,277.56
  5. Step 5: Solve for x
    x = 77,277.56/284.89
  6. Step 6: Final answer
    x = 271.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.