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Finding the Fourth Proportional to 43.12, 59.48 and 26.72

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Solution

The fourth proportional to 43.12, 59.48 and 26.72 is: 36.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    43.12 : 59.48 = 26.72 : x
  2. Step 2: Convert to fraction form
    43.12/59.48 = 26.72/x
  3. Step 3: Cross multiply
    43.12x = 59.48 × 26.72
  4. Step 4: Simplify right side
    43.12x = 1,589.31
  5. Step 5: Solve for x
    x = 1,589.31/43.12
  6. Step 6: Final answer
    x = 36.86

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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.