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Finding the Fourth Proportional to 24.76, 37 and 21.79

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Solution

The fourth proportional to 24.76, 37 and 21.79 is: 32.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    24.76 : 37 = 21.79 : x
  2. Step 2: Convert to fraction form
    24.76/37 = 21.79/x
  3. Step 3: Cross multiply
    24.76x = 37 × 21.79
  4. Step 4: Simplify right side
    24.76x = 806.23
  5. Step 5: Solve for x
    x = 806.23/24.76
  6. Step 6: Final answer
    x = 32.56

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.