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Finding the Fourth Proportional to 620.25, 930.63 and 273.40

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Solution

The fourth proportional to 620.25, 930.63 and 273.40 is: 410.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.25 : 930.63 = 273.40 : x
  2. Step 2: Convert to fraction form
    620.25/930.63 = 273.40/x
  3. Step 3: Cross multiply
    620.25x = 930.63 × 273.40
  4. Step 4: Simplify right side
    620.25x = 254,434.24
  5. Step 5: Solve for x
    x = 254,434.24/620.25
  6. Step 6: Final answer
    x = 410.21

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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.