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Finding the Fourth Proportional to 79.30, 109.44 and 44.33

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Solution

The fourth proportional to 79.30, 109.44 and 44.33 is: 61.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    79.30 : 109.44 = 44.33 : x
  2. Step 2: Convert to fraction form
    79.30/109.44 = 44.33/x
  3. Step 3: Cross multiply
    79.30x = 109.44 × 44.33
  4. Step 4: Simplify right side
    79.30x = 4,851.63
  5. Step 5: Solve for x
    x = 4,851.63/79.30
  6. Step 6: Final answer
    x = 61.18

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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.