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Finding the Fourth Proportional to 29.72, 44.23 and 28.87

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Solution

The fourth proportional to 29.72, 44.23 and 28.87 is: 42.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    29.72 : 44.23 = 28.87 : x
  2. Step 2: Convert to fraction form
    29.72/44.23 = 28.87/x
  3. Step 3: Cross multiply
    29.72x = 44.23 × 28.87
  4. Step 4: Simplify right side
    29.72x = 1,276.92
  5. Step 5: Solve for x
    x = 1,276.92/29.72
  6. Step 6: Final answer
    x = 42.97

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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.