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Finding the Fourth Proportional to 627.09, 866.05 and 558.37

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Solution

The fourth proportional to 627.09, 866.05 and 558.37 is: 771.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.09 : 866.05 = 558.37 : x
  2. Step 2: Convert to fraction form
    627.09/866.05 = 558.37/x
  3. Step 3: Cross multiply
    627.09x = 866.05 × 558.37
  4. Step 4: Simplify right side
    627.09x = 483,576.03
  5. Step 5: Solve for x
    x = 483,576.03/627.09
  6. Step 6: Final answer
    x = 771.15

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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.