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Finding the Fourth Proportional to 627.37, 865.80 and 577.13

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Solution

The fourth proportional to 627.37, 865.80 and 577.13 is: 796.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.37 : 865.80 = 577.13 : x
  2. Step 2: Convert to fraction form
    627.37/865.80 = 577.13/x
  3. Step 3: Cross multiply
    627.37x = 865.80 × 577.13
  4. Step 4: Simplify right side
    627.37x = 499,674.83
  5. Step 5: Solve for x
    x = 499,674.83/627.37
  6. Step 6: Final answer
    x = 796.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.