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Finding the Fourth Proportional to 46.22, 63.75 and 38.96

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Solution

The fourth proportional to 46.22, 63.75 and 38.96 is: 53.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    46.22 : 63.75 = 38.96 : x
  2. Step 2: Convert to fraction form
    46.22/63.75 = 38.96/x
  3. Step 3: Cross multiply
    46.22x = 63.75 × 38.96
  4. Step 4: Simplify right side
    46.22x = 2,483.70
  5. Step 5: Solve for x
    x = 2,483.70/46.22
  6. Step 6: Final answer
    x = 53.74

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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.