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Finding the Fourth Proportional to 620.82, 931.23 and 377.55

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Solution

The fourth proportional to 620.82, 931.23 and 377.55 is: 566.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.82 : 931.23 = 377.55 : x
  2. Step 2: Convert to fraction form
    620.82/931.23 = 377.55/x
  3. Step 3: Cross multiply
    620.82x = 931.23 × 377.55
  4. Step 4: Simplify right side
    620.82x = 351,585.89
  5. Step 5: Solve for x
    x = 351,585.89/620.82
  6. Step 6: Final answer
    x = 566.33

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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.