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Finding the Third Proportional to 584.63 and 1,290.75

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Solution

The third proportional to 584.63 and 1,290.75 is: 2,849.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    584.63 : 1,290.75 = 1,290.75 : x
  2. Step 2: Convert to fraction form
    584.63/1,290.75 = 1,290.75/x
  3. Step 3: Cross multiply
    584.63x = 1,290.75 × 1,290.75
  4. Step 4: Simplify right side
    584.63x = 1,666,035.56
  5. Step 5: Solve for x
    x = 1,666,035.56/584.63
  6. Step 6: Final answer
    x = 2,849.75

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.