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Finding the Fourth Proportional to 621.34, 931.78 and 182.47

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Solution

The fourth proportional to 621.34, 931.78 and 182.47 is: 273.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    621.34 : 931.78 = 182.47 : x
  2. Step 2: Convert to fraction form
    621.34/931.78 = 182.47/x
  3. Step 3: Cross multiply
    621.34x = 931.78 × 182.47
  4. Step 4: Simplify right side
    621.34x = 170,020.98
  5. Step 5: Solve for x
    x = 170,020.98/621.34
  6. Step 6: Final answer
    x = 273.64

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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.