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Finding the Fourth Proportional to 720.29, 994.32 and 454.97

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Solution

The fourth proportional to 720.29, 994.32 and 454.97 is: 628.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    720.29 : 994.32 = 454.97 : x
  2. Step 2: Convert to fraction form
    720.29/994.32 = 454.97/x
  3. Step 3: Cross multiply
    720.29x = 994.32 × 454.97
  4. Step 4: Simplify right side
    720.29x = 452,388.26
  5. Step 5: Solve for x
    x = 452,388.26/720.29
  6. Step 6: Final answer
    x = 628.06

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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.