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Finding the Fourth Proportional to 484.03, 725.91 and 455.28

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Solution

The fourth proportional to 484.03, 725.91 and 455.28 is: 682.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.03 : 725.91 = 455.28 : x
  2. Step 2: Convert to fraction form
    484.03/725.91 = 455.28/x
  3. Step 3: Cross multiply
    484.03x = 725.91 × 455.28
  4. Step 4: Simplify right side
    484.03x = 330,492.30
  5. Step 5: Solve for x
    x = 330,492.30/484.03
  6. Step 6: Final answer
    x = 682.79

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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.