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Finding the Third Proportional to 261.84 and 570.66

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Solution

The third proportional to 261.84 and 570.66 is: 1,243.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    261.84 : 570.66 = 570.66 : x
  2. Step 2: Convert to fraction form
    261.84/570.66 = 570.66/x
  3. Step 3: Cross multiply
    261.84x = 570.66 × 570.66
  4. Step 4: Simplify right side
    261.84x = 325,648.56
  5. Step 5: Solve for x
    x = 325,648.56/261.84
  6. Step 6: Final answer
    x = 1,243.68

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.