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Finding the Fourth Proportional to 1,768.01, 2,650.98 and 672.45

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Solution

The fourth proportional to 1,768.01, 2,650.98 and 672.45 is: 1,008.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,768.01 : 2,650.98 = 672.45 : x
  2. Step 2: Convert to fraction form
    1,768.01/2,650.98 = 672.45/x
  3. Step 3: Cross multiply
    1,768.01x = 2,650.98 × 672.45
  4. Step 4: Simplify right side
    1,768.01x = 1,782,651.50
  5. Step 5: Solve for x
    x = 1,782,651.50/1,768.01
  6. Step 6: Final answer
    x = 1,008.28

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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.