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Finding the Fourth Proportional to 38.88, 53.61 and 32.73

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Solution

The fourth proportional to 38.88, 53.61 and 32.73 is: 45.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    38.88 : 53.61 = 32.73 : x
  2. Step 2: Convert to fraction form
    38.88/53.61 = 32.73/x
  3. Step 3: Cross multiply
    38.88x = 53.61 × 32.73
  4. Step 4: Simplify right side
    38.88x = 1,754.66
  5. Step 5: Solve for x
    x = 1,754.66/38.88
  6. Step 6: Final answer
    x = 45.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.