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Finding the Third Proportional to 577.88 and 786.19

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Solution

The third proportional to 577.88 and 786.19 is: 1,069.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    577.88 : 786.19 = 786.19 : x
  2. Step 2: Convert to fraction form
    577.88/786.19 = 786.19/x
  3. Step 3: Cross multiply
    577.88x = 786.19 × 786.19
  4. Step 4: Simplify right side
    577.88x = 618,090.79
  5. Step 5: Solve for x
    x = 618,090.79/577.88
  6. Step 6: Final answer
    x = 1,069.59

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.