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Finding the Fourth Proportional to 29.64, 44.30 and 28.12

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Solution

The fourth proportional to 29.64, 44.30 and 28.12 is: 42.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    29.64 : 44.30 = 28.12 : x
  2. Step 2: Convert to fraction form
    29.64/44.30 = 28.12/x
  3. Step 3: Cross multiply
    29.64x = 44.30 × 28.12
  4. Step 4: Simplify right side
    29.64x = 1,245.72
  5. Step 5: Solve for x
    x = 1,245.72/29.64
  6. Step 6: Final answer
    x = 42.03

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.