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Finding the Fourth Proportional to 43.05, 59.31 and 40.44

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Solution

The fourth proportional to 43.05, 59.31 and 40.44 is: 55.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    43.05 : 59.31 = 40.44 : x
  2. Step 2: Convert to fraction form
    43.05/59.31 = 40.44/x
  3. Step 3: Cross multiply
    43.05x = 59.31 × 40.44
  4. Step 4: Simplify right side
    43.05x = 2,398.50
  5. Step 5: Solve for x
    x = 2,398.50/43.05
  6. Step 6: Final answer
    x = 55.71

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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.