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Finding the Third Proportional to 291.38 and 528.75

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Solution

The third proportional to 291.38 and 528.75 is: 959.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    291.38 : 528.75 = 528.75 : x
  2. Step 2: Convert to fraction form
    291.38/528.75 = 528.75/x
  3. Step 3: Cross multiply
    291.38x = 528.75 × 528.75
  4. Step 4: Simplify right side
    291.38x = 279,576.56
  5. Step 5: Solve for x
    x = 279,576.56/291.38
  6. Step 6: Final answer
    x = 959.51

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Why These Related Problems?

These problems maintain the same ratio (1.81) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.