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Finding the Fourth Proportional to 482.88, 725.04 and 479.64

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Solution

The fourth proportional to 482.88, 725.04 and 479.64 is: 720.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.88 : 725.04 = 479.64 : x
  2. Step 2: Convert to fraction form
    482.88/725.04 = 479.64/x
  3. Step 3: Cross multiply
    482.88x = 725.04 × 479.64
  4. Step 4: Simplify right side
    482.88x = 347,758.19
  5. Step 5: Solve for x
    x = 347,758.19/482.88
  6. Step 6: Final answer
    x = 720.18

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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.