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Finding the Third Proportional to 877.08 and 1,319.20

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Solution

The third proportional to 877.08 and 1,319.20 is: 1,984.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    877.08 : 1,319.20 = 1,319.20 : x
  2. Step 2: Convert to fraction form
    877.08/1,319.20 = 1,319.20/x
  3. Step 3: Cross multiply
    877.08x = 1,319.20 × 1,319.20
  4. Step 4: Simplify right side
    877.08x = 1,740,296.89
  5. Step 5: Solve for x
    x = 1,740,296.89/877.08
  6. Step 6: Final answer
    x = 1,984.20

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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.