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Finding the Fourth Proportional to 43.80, 65.25 and 41.19

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Solution

The fourth proportional to 43.80, 65.25 and 41.19 is: 61.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    43.80 : 65.25 = 41.19 : x
  2. Step 2: Convert to fraction form
    43.80/65.25 = 41.19/x
  3. Step 3: Cross multiply
    43.80x = 65.25 × 41.19
  4. Step 4: Simplify right side
    43.80x = 2,687.65
  5. Step 5: Solve for x
    x = 2,687.65/43.80
  6. Step 6: Final answer
    x = 61.36

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.