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Finding the Fourth Proportional to 43.28, 59.72 and 26.92

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Solution

The fourth proportional to 43.28, 59.72 and 26.92 is: 37.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    43.28 : 59.72 = 26.92 : x
  2. Step 2: Convert to fraction form
    43.28/59.72 = 26.92/x
  3. Step 3: Cross multiply
    43.28x = 59.72 × 26.92
  4. Step 4: Simplify right side
    43.28x = 1,607.66
  5. Step 5: Solve for x
    x = 1,607.66/43.28
  6. Step 6: Final answer
    x = 37.15

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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.