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Finding the Fourth Proportional to 94.93, 142.39 and 43.55

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Solution

The fourth proportional to 94.93, 142.39 and 43.55 is: 65.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.93 : 142.39 = 43.55 : x
  2. Step 2: Convert to fraction form
    94.93/142.39 = 43.55/x
  3. Step 3: Cross multiply
    94.93x = 142.39 × 43.55
  4. Step 4: Simplify right side
    94.93x = 6,201.08
  5. Step 5: Solve for x
    x = 6,201.08/94.93
  6. Step 6: Final answer
    x = 65.32

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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.