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Finding the Fourth Proportional to 45.06, 67.56 and 25.76

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Solution

The fourth proportional to 45.06, 67.56 and 25.76 is: 38.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    45.06 : 67.56 = 25.76 : x
  2. Step 2: Convert to fraction form
    45.06/67.56 = 25.76/x
  3. Step 3: Cross multiply
    45.06x = 67.56 × 25.76
  4. Step 4: Simplify right side
    45.06x = 1,739.91
  5. Step 5: Solve for x
    x = 1,739.91/45.06
  6. Step 6: Final answer
    x = 38.61

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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.