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Finding the Fourth Proportional to 620.64, 930.71 and 181.73

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Solution

The fourth proportional to 620.64, 930.71 and 181.73 is: 272.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.64 : 930.71 = 181.73 : x
  2. Step 2: Convert to fraction form
    620.64/930.71 = 181.73/x
  3. Step 3: Cross multiply
    620.64x = 930.71 × 181.73
  4. Step 4: Simplify right side
    620.64x = 169,140.71
  5. Step 5: Solve for x
    x = 169,140.71/620.64
  6. Step 6: Final answer
    x = 272.53

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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.