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Finding the Fourth Proportional to 730.20, 1,008.05 and 450.58

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Solution

The fourth proportional to 730.20, 1,008.05 and 450.58 is: 622.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    730.20 : 1,008.05 = 450.58 : x
  2. Step 2: Convert to fraction form
    730.20/1,008.05 = 450.58/x
  3. Step 3: Cross multiply
    730.20x = 1,008.05 × 450.58
  4. Step 4: Simplify right side
    730.20x = 454,207.87
  5. Step 5: Solve for x
    x = 454,207.87/730.20
  6. Step 6: Final answer
    x = 622.04

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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.