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Finding the Third Proportional to 311.63 and 528.56

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Solution

The third proportional to 311.63 and 528.56 is: 896.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    311.63 : 528.56 = 528.56 : x
  2. Step 2: Convert to fraction form
    311.63/528.56 = 528.56/x
  3. Step 3: Cross multiply
    311.63x = 528.56 × 528.56
  4. Step 4: Simplify right side
    311.63x = 279,378.32
  5. Step 5: Solve for x
    x = 279,378.32/311.63
  6. Step 6: Final answer
    x = 896.52

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Why These Related Problems?

These problems maintain the same ratio (1.70) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.