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Finding the Fourth Proportional to 50.76, 76.16 and 22.24

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Solution

The fourth proportional to 50.76, 76.16 and 22.24 is: 33.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    50.76 : 76.16 = 22.24 : x
  2. Step 2: Convert to fraction form
    50.76/76.16 = 22.24/x
  3. Step 3: Cross multiply
    50.76x = 76.16 × 22.24
  4. Step 4: Simplify right side
    50.76x = 1,693.80
  5. Step 5: Solve for x
    x = 1,693.80/50.76
  6. Step 6: Final answer
    x = 33.37

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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.