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Finding the Fourth Proportional to 621.33, 930.16 and 534.05

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Solution

The fourth proportional to 621.33, 930.16 and 534.05 is: 799.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    621.33 : 930.16 = 534.05 : x
  2. Step 2: Convert to fraction form
    621.33/930.16 = 534.05/x
  3. Step 3: Cross multiply
    621.33x = 930.16 × 534.05
  4. Step 4: Simplify right side
    621.33x = 496,751.95
  5. Step 5: Solve for x
    x = 496,751.95/621.33
  6. Step 6: Final answer
    x = 799.50

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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.