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Finding the Fourth Proportional to 94.91, 142.40 and 43.59

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Solution

The fourth proportional to 94.91, 142.40 and 43.59 is: 65.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.91 : 142.40 = 43.59 : x
  2. Step 2: Convert to fraction form
    94.91/142.40 = 43.59/x
  3. Step 3: Cross multiply
    94.91x = 142.40 × 43.59
  4. Step 4: Simplify right side
    94.91x = 6,207.22
  5. Step 5: Solve for x
    x = 6,207.22/94.91
  6. Step 6: Final answer
    x = 65.40

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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.