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Finding the Fourth Proportional to 44, 61 and 43.80

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Solution

The fourth proportional to 44, 61 and 43.80 is: 60.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    44 : 61 = 43.80 : x
  2. Step 2: Convert to fraction form
    44/61 = 43.80/x
  3. Step 3: Cross multiply
    44x = 61 × 43.80
  4. Step 4: Simplify right side
    44x = 2,671.80
  5. Step 5: Solve for x
    x = 2,671.80/44
  6. Step 6: Final answer
    x = 60.72

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.