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Finding the Fourth Proportional to 482.88, 725.28 and 451.20

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Solution

The fourth proportional to 482.88, 725.28 and 451.20 is: 677.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.88 : 725.28 = 451.20 : x
  2. Step 2: Convert to fraction form
    482.88/725.28 = 451.20/x
  3. Step 3: Cross multiply
    482.88x = 725.28 × 451.20
  4. Step 4: Simplify right side
    482.88x = 327,246.34
  5. Step 5: Solve for x
    x = 327,246.34/482.88
  6. Step 6: Final answer
    x = 677.70

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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.