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Finding the Fourth Proportional to 620.01, 933.69 and 539.82

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Solution

The fourth proportional to 620.01, 933.69 and 539.82 is: 812.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.01 : 933.69 = 539.82 : x
  2. Step 2: Convert to fraction form
    620.01/933.69 = 539.82/x
  3. Step 3: Cross multiply
    620.01x = 933.69 × 539.82
  4. Step 4: Simplify right side
    620.01x = 504,024.54
  5. Step 5: Solve for x
    x = 504,024.54/620.01
  6. Step 6: Final answer
    x = 812.93

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.