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Finding the Fourth Proportional to 620.02, 930.18 and 187.18

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Solution

The fourth proportional to 620.02, 930.18 and 187.18 is: 280.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.02 : 930.18 = 187.18 : x
  2. Step 2: Convert to fraction form
    620.02/930.18 = 187.18/x
  3. Step 3: Cross multiply
    620.02x = 930.18 × 187.18
  4. Step 4: Simplify right side
    620.02x = 174,109.47
  5. Step 5: Solve for x
    x = 174,109.47/620.02
  6. Step 6: Final answer
    x = 280.81

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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.