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Finding the Fourth Proportional to 484.08, 725.44 and 289.12

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Solution

The fourth proportional to 484.08, 725.44 and 289.12 is: 433.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.08 : 725.44 = 289.12 : x
  2. Step 2: Convert to fraction form
    484.08/725.44 = 289.12/x
  3. Step 3: Cross multiply
    484.08x = 725.44 × 289.12
  4. Step 4: Simplify right side
    484.08x = 209,739.21
  5. Step 5: Solve for x
    x = 209,739.21/484.08
  6. Step 6: Final answer
    x = 433.27

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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.