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Finding the Fourth Proportional to 482.81, 724.26 and 136.15

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Solution

The fourth proportional to 482.81, 724.26 and 136.15 is: 204.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.81 : 724.26 = 136.15 : x
  2. Step 2: Convert to fraction form
    482.81/724.26 = 136.15/x
  3. Step 3: Cross multiply
    482.81x = 724.26 × 136.15
  4. Step 4: Simplify right side
    482.81x = 98,608.00
  5. Step 5: Solve for x
    x = 98,608.00/482.81
  6. Step 6: Final answer
    x = 204.24

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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.