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Finding the Fourth Proportional to 46.89, 64.21 and 46.62

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Solution

The fourth proportional to 46.89, 64.21 and 46.62 is: 63.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    46.89 : 64.21 = 46.62 : x
  2. Step 2: Convert to fraction form
    46.89/64.21 = 46.62/x
  3. Step 3: Cross multiply
    46.89x = 64.21 × 46.62
  4. Step 4: Simplify right side
    46.89x = 2,993.47
  5. Step 5: Solve for x
    x = 2,993.47/46.89
  6. Step 6: Final answer
    x = 63.84

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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.