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Finding the Fourth Proportional to 1,449.37, 2,174.76 and 627.88

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Solution

The fourth proportional to 1,449.37, 2,174.76 and 627.88 is: 942.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,449.37 : 2,174.76 = 627.88 : x
  2. Step 2: Convert to fraction form
    1,449.37/2,174.76 = 627.88/x
  3. Step 3: Cross multiply
    1,449.37x = 2,174.76 × 627.88
  4. Step 4: Simplify right side
    1,449.37x = 1,365,488.31
  5. Step 5: Solve for x
    x = 1,365,488.31/1,449.37
  6. Step 6: Final answer
    x = 942.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.