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Finding the Fourth Proportional to 482.85, 724.27 and 136.22

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Solution

The fourth proportional to 482.85, 724.27 and 136.22 is: 204.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.85 : 724.27 = 136.22 : x
  2. Step 2: Convert to fraction form
    482.85/724.27 = 136.22/x
  3. Step 3: Cross multiply
    482.85x = 724.27 × 136.22
  4. Step 4: Simplify right side
    482.85x = 98,660.06
  5. Step 5: Solve for x
    x = 98,660.06/482.85
  6. Step 6: Final answer
    x = 204.33

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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.