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Finding the Fourth Proportional to 32.79, 49.19 and 19.92

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Solution

The fourth proportional to 32.79, 49.19 and 19.92 is: 29.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    32.79 : 49.19 = 19.92 : x
  2. Step 2: Convert to fraction form
    32.79/49.19 = 19.92/x
  3. Step 3: Cross multiply
    32.79x = 49.19 × 19.92
  4. Step 4: Simplify right side
    32.79x = 979.77
  5. Step 5: Solve for x
    x = 979.77/32.79
  6. Step 6: Final answer
    x = 29.88

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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.