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Finding the Fourth Proportional to 32.91, 49.33 and 15.79

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Solution

The fourth proportional to 32.91, 49.33 and 15.79 is: 23.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    32.91 : 49.33 = 15.79 : x
  2. Step 2: Convert to fraction form
    32.91/49.33 = 15.79/x
  3. Step 3: Cross multiply
    32.91x = 49.33 × 15.79
  4. Step 4: Simplify right side
    32.91x = 778.76
  5. Step 5: Solve for x
    x = 778.76/32.91
  6. Step 6: Final answer
    x = 23.66

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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.