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Finding the Third Proportional to 276.19 and 528.75

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Solution

The third proportional to 276.19 and 528.75 is: 1,012.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.19 : 528.75 = 528.75 : x
  2. Step 2: Convert to fraction form
    276.19/528.75 = 528.75/x
  3. Step 3: Cross multiply
    276.19x = 528.75 × 528.75
  4. Step 4: Simplify right side
    276.19x = 279,576.56
  5. Step 5: Solve for x
    x = 279,576.56/276.19
  6. Step 6: Final answer
    x = 1,012.27

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Why These Related Problems?

These problems maintain the same ratio (1.91) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.