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Finding the Third Proportional to 580.50 and 1,281.75

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Solution

The third proportional to 580.50 and 1,281.75 is: 2,830.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    580.50 : 1,281.75 = 1,281.75 : x
  2. Step 2: Convert to fraction form
    580.50/1,281.75 = 1,281.75/x
  3. Step 3: Cross multiply
    580.50x = 1,281.75 × 1,281.75
  4. Step 4: Simplify right side
    580.50x = 1,642,883.06
  5. Step 5: Solve for x
    x = 1,642,883.06/580.50
  6. Step 6: Final answer
    x = 2,830.12

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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.