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Finding the Fourth Proportional to 46.02, 63.21 and 39.82

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Solution

The fourth proportional to 46.02, 63.21 and 39.82 is: 54.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    46.02 : 63.21 = 39.82 : x
  2. Step 2: Convert to fraction form
    46.02/63.21 = 39.82/x
  3. Step 3: Cross multiply
    46.02x = 63.21 × 39.82
  4. Step 4: Simplify right side
    46.02x = 2,517.02
  5. Step 5: Solve for x
    x = 2,517.02/46.02
  6. Step 6: Final answer
    x = 54.69

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.