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Finding the Fourth Proportional to 32.94, 49.43 and 12.66

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Solution

The fourth proportional to 32.94, 49.43 and 12.66 is: 18.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    32.94 : 49.43 = 12.66 : x
  2. Step 2: Convert to fraction form
    32.94/49.43 = 12.66/x
  3. Step 3: Cross multiply
    32.94x = 49.43 × 12.66
  4. Step 4: Simplify right side
    32.94x = 625.59
  5. Step 5: Solve for x
    x = 625.59/32.94
  6. Step 6: Final answer
    x = 18.99

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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.