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Finding the Fourth Proportional to 1,675.98, 2,512.81 and 636.05

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Solution

The fourth proportional to 1,675.98, 2,512.81 and 636.05 is: 953.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,675.98 : 2,512.81 = 636.05 : x
  2. Step 2: Convert to fraction form
    1,675.98/2,512.81 = 636.05/x
  3. Step 3: Cross multiply
    1,675.98x = 2,512.81 × 636.05
  4. Step 4: Simplify right side
    1,675.98x = 1,598,258.65
  5. Step 5: Solve for x
    x = 1,598,258.65/1,675.98
  6. Step 6: Final answer
    x = 953.63

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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.