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Finding the Fourth Proportional to 43.95, 66.29 and 43.95

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Solution

The fourth proportional to 43.95, 66.29 and 43.95 is: 66.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    43.95 : 66.29 = 43.95 : x
  2. Step 2: Convert to fraction form
    43.95/66.29 = 43.95/x
  3. Step 3: Cross multiply
    43.95x = 66.29 × 43.95
  4. Step 4: Simplify right side
    43.95x = 2,913.56
  5. Step 5: Solve for x
    x = 2,913.56/43.95
  6. Step 6: Final answer
    x = 66.29

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.