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Finding the Fourth Proportional to 50.28, 69.24 and 47.46

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Solution

The fourth proportional to 50.28, 69.24 and 47.46 is: 65.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    50.28 : 69.24 = 47.46 : x
  2. Step 2: Convert to fraction form
    50.28/69.24 = 47.46/x
  3. Step 3: Cross multiply
    50.28x = 69.24 × 47.46
  4. Step 4: Simplify right side
    50.28x = 3,286.13
  5. Step 5: Solve for x
    x = 3,286.13/50.28
  6. Step 6: Final answer
    x = 65.36

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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.