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Finding the Fourth Proportional to 620.29, 930.56 and 187.41

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Solution

The fourth proportional to 620.29, 930.56 and 187.41 is: 281.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.29 : 930.56 = 187.41 : x
  2. Step 2: Convert to fraction form
    620.29/930.56 = 187.41/x
  3. Step 3: Cross multiply
    620.29x = 930.56 × 187.41
  4. Step 4: Simplify right side
    620.29x = 174,396.72
  5. Step 5: Solve for x
    x = 174,396.72/620.29
  6. Step 6: Final answer
    x = 281.15

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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.