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Finding the Fourth Proportional to 46.92, 70.73 and 45.89

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Solution

The fourth proportional to 46.92, 70.73 and 45.89 is: 69.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    46.92 : 70.73 = 45.89 : x
  2. Step 2: Convert to fraction form
    46.92/70.73 = 45.89/x
  3. Step 3: Cross multiply
    46.92x = 70.73 × 45.89
  4. Step 4: Simplify right side
    46.92x = 3,245.80
  5. Step 5: Solve for x
    x = 3,245.80/46.92
  6. Step 6: Final answer
    x = 69.18

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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.