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Finding the Fourth Proportional to 746, 1,029.16 and 451.12

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Solution

The fourth proportional to 746, 1,029.16 and 451.12 is: 622.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    746 : 1,029.16 = 451.12 : x
  2. Step 2: Convert to fraction form
    746/1,029.16 = 451.12/x
  3. Step 3: Cross multiply
    746x = 1,029.16 × 451.12
  4. Step 4: Simplify right side
    746x = 464,274.66
  5. Step 5: Solve for x
    x = 464,274.66/746
  6. Step 6: Final answer
    x = 622.35

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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.