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Finding the Fourth Proportional to 29, 39.73 and 28.73

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Solution

The fourth proportional to 29, 39.73 and 28.73 is: 39.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    29 : 39.73 = 28.73 : x
  2. Step 2: Convert to fraction form
    29/39.73 = 28.73/x
  3. Step 3: Cross multiply
    29x = 39.73 × 28.73
  4. Step 4: Simplify right side
    29x = 1,141.44
  5. Step 5: Solve for x
    x = 1,141.44/29
  6. Step 6: Final answer
    x = 39.36

Related Problems

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.