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Finding the Third Proportional to 385.69 and 565.03

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Solution

The third proportional to 385.69 and 565.03 is: 827.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    385.69 : 565.03 = 565.03 : x
  2. Step 2: Convert to fraction form
    385.69/565.03 = 565.03/x
  3. Step 3: Cross multiply
    385.69x = 565.03 × 565.03
  4. Step 4: Simplify right side
    385.69x = 319,260.31
  5. Step 5: Solve for x
    x = 319,260.31/385.69
  6. Step 6: Final answer
    x = 827.77

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.