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Finding the Fourth Proportional to 621.26, 930.51 and 563.85

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Solution

The fourth proportional to 621.26, 930.51 and 563.85 is: 844.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    621.26 : 930.51 = 563.85 : x
  2. Step 2: Convert to fraction form
    621.26/930.51 = 563.85/x
  3. Step 3: Cross multiply
    621.26x = 930.51 × 563.85
  4. Step 4: Simplify right side
    621.26x = 524,668.06
  5. Step 5: Solve for x
    x = 524,668.06/621.26
  6. Step 6: Final answer
    x = 844.53

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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.