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Finding the Fourth Proportional to 45.41, 68.13 and 18.36

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Solution

The fourth proportional to 45.41, 68.13 and 18.36 is: 27.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    45.41 : 68.13 = 18.36 : x
  2. Step 2: Convert to fraction form
    45.41/68.13 = 18.36/x
  3. Step 3: Cross multiply
    45.41x = 68.13 × 18.36
  4. Step 4: Simplify right side
    45.41x = 1,250.87
  5. Step 5: Solve for x
    x = 1,250.87/45.41
  6. Step 6: Final answer
    x = 27.55

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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.