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Finding the Fourth Proportional to 34.04, 51.08 and 28.76

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Solution

The fourth proportional to 34.04, 51.08 and 28.76 is: 43.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    34.04 : 51.08 = 28.76 : x
  2. Step 2: Convert to fraction form
    34.04/51.08 = 28.76/x
  3. Step 3: Cross multiply
    34.04x = 51.08 × 28.76
  4. Step 4: Simplify right side
    34.04x = 1,469.06
  5. Step 5: Solve for x
    x = 1,469.06/34.04
  6. Step 6: Final answer
    x = 43.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.