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Finding the Third Proportional to 261.56 and 540.84

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Solution

The third proportional to 261.56 and 540.84 is: 1,118.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    261.56 : 540.84 = 540.84 : x
  2. Step 2: Convert to fraction form
    261.56/540.84 = 540.84/x
  3. Step 3: Cross multiply
    261.56x = 540.84 × 540.84
  4. Step 4: Simplify right side
    261.56x = 292,511.96
  5. Step 5: Solve for x
    x = 292,511.96/261.56
  6. Step 6: Final answer
    x = 1,118.33

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.