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Finding the Fourth Proportional to 45.47, 68.17 and 23.76

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Solution

The fourth proportional to 45.47, 68.17 and 23.76 is: 35.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    45.47 : 68.17 = 23.76 : x
  2. Step 2: Convert to fraction form
    45.47/68.17 = 23.76/x
  3. Step 3: Cross multiply
    45.47x = 68.17 × 23.76
  4. Step 4: Simplify right side
    45.47x = 1,619.72
  5. Step 5: Solve for x
    x = 1,619.72/45.47
  6. Step 6: Final answer
    x = 35.62

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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.