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Finding the Fourth Proportional to 621.20, 931.63 and 182.54

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Solution

The fourth proportional to 621.20, 931.63 and 182.54 is: 273.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    621.20 : 931.63 = 182.54 : x
  2. Step 2: Convert to fraction form
    621.20/931.63 = 182.54/x
  3. Step 3: Cross multiply
    621.20x = 931.63 × 182.54
  4. Step 4: Simplify right side
    621.20x = 170,061.61
  5. Step 5: Solve for x
    x = 170,061.61/621.20
  6. Step 6: Final answer
    x = 273.77

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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.