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Finding the Fourth Proportional to 46.90, 70.63 and 44.20

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Solution

The fourth proportional to 46.90, 70.63 and 44.20 is: 66.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    46.90 : 70.63 = 44.20 : x
  2. Step 2: Convert to fraction form
    46.90/70.63 = 44.20/x
  3. Step 3: Cross multiply
    46.90x = 70.63 × 44.20
  4. Step 4: Simplify right side
    46.90x = 3,121.85
  5. Step 5: Solve for x
    x = 3,121.85/46.90
  6. Step 6: Final answer
    x = 66.56

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.