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Finding the Third Proportional to 46.50 and 74.88

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Solution

The third proportional to 46.50 and 74.88 is: 120.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    46.50 : 74.88 = 74.88 : x
  2. Step 2: Convert to fraction form
    46.50/74.88 = 74.88/x
  3. Step 3: Cross multiply
    46.50x = 74.88 × 74.88
  4. Step 4: Simplify right side
    46.50x = 5,606.27
  5. Step 5: Solve for x
    x = 5,606.27/46.50
  6. Step 6: Final answer
    x = 120.56

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.