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Finding the Third Proportional to 555.88 and 860.81

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Solution

The third proportional to 555.88 and 860.81 is: 1,333.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.88 : 860.81 = 860.81 : x
  2. Step 2: Convert to fraction form
    555.88/860.81 = 860.81/x
  3. Step 3: Cross multiply
    555.88x = 860.81 × 860.81
  4. Step 4: Simplify right side
    555.88x = 740,998.16
  5. Step 5: Solve for x
    x = 740,998.16/555.88
  6. Step 6: Final answer
    x = 1,333.03

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.