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Finding the Fourth Proportional to 620.76, 934.82 and 540.57

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Solution

The fourth proportional to 620.76, 934.82 and 540.57 is: 814.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.76 : 934.82 = 540.57 : x
  2. Step 2: Convert to fraction form
    620.76/934.82 = 540.57/x
  3. Step 3: Cross multiply
    620.76x = 934.82 × 540.57
  4. Step 4: Simplify right side
    620.76x = 505,335.65
  5. Step 5: Solve for x
    x = 505,335.65/620.76
  6. Step 6: Final answer
    x = 814.06

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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.