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Finding the Fourth Proportional to 746.37, 1,029.06 and 613.42

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Solution

The fourth proportional to 746.37, 1,029.06 and 613.42 is: 845.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    746.37 : 1,029.06 = 613.42 : x
  2. Step 2: Convert to fraction form
    746.37/1,029.06 = 613.42/x
  3. Step 3: Cross multiply
    746.37x = 1,029.06 × 613.42
  4. Step 4: Simplify right side
    746.37x = 631,245.99
  5. Step 5: Solve for x
    x = 631,245.99/746.37
  6. Step 6: Final answer
    x = 845.75

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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.