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Finding the Fourth Proportional to 482.95, 724.32 and 131.56

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Solution

The fourth proportional to 482.95, 724.32 and 131.56 is: 197.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.95 : 724.32 = 131.56 : x
  2. Step 2: Convert to fraction form
    482.95/724.32 = 131.56/x
  3. Step 3: Cross multiply
    482.95x = 724.32 × 131.56
  4. Step 4: Simplify right side
    482.95x = 95,291.54
  5. Step 5: Solve for x
    x = 95,291.54/482.95
  6. Step 6: Final answer
    x = 197.31

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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.