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Finding the Fourth Proportional to 45.87, 63.23 and 38.94

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Solution

The fourth proportional to 45.87, 63.23 and 38.94 is: 53.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    45.87 : 63.23 = 38.94 : x
  2. Step 2: Convert to fraction form
    45.87/63.23 = 38.94/x
  3. Step 3: Cross multiply
    45.87x = 63.23 × 38.94
  4. Step 4: Simplify right side
    45.87x = 2,462.18
  5. Step 5: Solve for x
    x = 2,462.18/45.87
  6. Step 6: Final answer
    x = 53.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.