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Finding the Fourth Proportional to 619.85, 925.76 and 533.39

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Solution

The fourth proportional to 619.85, 925.76 and 533.39 is: 796.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.85 : 925.76 = 533.39 : x
  2. Step 2: Convert to fraction form
    619.85/925.76 = 533.39/x
  3. Step 3: Cross multiply
    619.85x = 925.76 × 533.39
  4. Step 4: Simplify right side
    619.85x = 493,787.83
  5. Step 5: Solve for x
    x = 493,787.83/619.85
  6. Step 6: Final answer
    x = 796.62

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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.