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Finding the Fourth Proportional to 620.14, 930.12 and 187.18

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Solution

The fourth proportional to 620.14, 930.12 and 187.18 is: 280.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.14 : 930.12 = 187.18 : x
  2. Step 2: Convert to fraction form
    620.14/930.12 = 187.18/x
  3. Step 3: Cross multiply
    620.14x = 930.12 × 187.18
  4. Step 4: Simplify right side
    620.14x = 174,099.86
  5. Step 5: Solve for x
    x = 174,099.86/620.14
  6. Step 6: Final answer
    x = 280.74

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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.