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Finding the Third Proportional to 28 and 46.25

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Solution

The third proportional to 28 and 46.25 is: 76.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28 : 46.25 = 46.25 : x
  2. Step 2: Convert to fraction form
    28/46.25 = 46.25/x
  3. Step 3: Cross multiply
    28x = 46.25 × 46.25
  4. Step 4: Simplify right side
    28x = 2,139.06
  5. Step 5: Solve for x
    x = 2,139.06/28
  6. Step 6: Final answer
    x = 76.40

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Why These Related Problems?

These problems maintain the same ratio (1.65) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.