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Finding the Third Proportional to 573.64 and 859.20

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Solution

The third proportional to 573.64 and 859.20 is: 1,286.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.64 : 859.20 = 859.20 : x
  2. Step 2: Convert to fraction form
    573.64/859.20 = 859.20/x
  3. Step 3: Cross multiply
    573.64x = 859.20 × 859.20
  4. Step 4: Simplify right side
    573.64x = 738,226.65
  5. Step 5: Solve for x
    x = 738,226.65/573.64
  6. Step 6: Final answer
    x = 1,286.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.