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Finding the Third Proportional to 258.19 and 706.22

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Solution

The third proportional to 258.19 and 706.22 is: 1,931.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    258.19 : 706.22 = 706.22 : x
  2. Step 2: Convert to fraction form
    258.19/706.22 = 706.22/x
  3. Step 3: Cross multiply
    258.19x = 706.22 × 706.22
  4. Step 4: Simplify right side
    258.19x = 498,744.92
  5. Step 5: Solve for x
    x = 498,744.92/258.19
  6. Step 6: Final answer
    x = 1,931.72

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Why These Related Problems?

These problems maintain the same ratio (2.74) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.