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Finding the Fourth Proportional to 626.25, 935.29 and 539.76

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Solution

The fourth proportional to 626.25, 935.29 and 539.76 is: 806.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.25 : 935.29 = 539.76 : x
  2. Step 2: Convert to fraction form
    626.25/935.29 = 539.76/x
  3. Step 3: Cross multiply
    626.25x = 935.29 × 539.76
  4. Step 4: Simplify right side
    626.25x = 504,830.78
  5. Step 5: Solve for x
    x = 504,830.78/626.25
  6. Step 6: Final answer
    x = 806.12

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.