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Finding the Third Proportional to 708.75 and 1,556.72

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Solution

The third proportional to 708.75 and 1,556.72 is: 3,419.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    708.75 : 1,556.72 = 1,556.72 : x
  2. Step 2: Convert to fraction form
    708.75/1,556.72 = 1,556.72/x
  3. Step 3: Cross multiply
    708.75x = 1,556.72 × 1,556.72
  4. Step 4: Simplify right side
    708.75x = 2,423,373.27
  5. Step 5: Solve for x
    x = 2,423,373.27/708.75
  6. Step 6: Final answer
    x = 3,419.22

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.