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Finding the Fourth Proportional to 43.96, 66.07 and 43.51

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Solution

The fourth proportional to 43.96, 66.07 and 43.51 is: 65.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    43.96 : 66.07 = 43.51 : x
  2. Step 2: Convert to fraction form
    43.96/66.07 = 43.51/x
  3. Step 3: Cross multiply
    43.96x = 66.07 × 43.51
  4. Step 4: Simplify right side
    43.96x = 2,874.27
  5. Step 5: Solve for x
    x = 2,874.27/43.96
  6. Step 6: Final answer
    x = 65.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.