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Finding the Fourth Proportional to 44.69, 61.69 and 30.94

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Solution

The fourth proportional to 44.69, 61.69 and 30.94 is: 42.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    44.69 : 61.69 = 30.94 : x
  2. Step 2: Convert to fraction form
    44.69/61.69 = 30.94/x
  3. Step 3: Cross multiply
    44.69x = 61.69 × 30.94
  4. Step 4: Simplify right side
    44.69x = 1,908.69
  5. Step 5: Solve for x
    x = 1,908.69/44.69
  6. Step 6: Final answer
    x = 42.71

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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.