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Finding the Fourth Proportional to 619.96, 930.39 and 533.71

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Solution

The fourth proportional to 619.96, 930.39 and 533.71 is: 800.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.96 : 930.39 = 533.71 : x
  2. Step 2: Convert to fraction form
    619.96/930.39 = 533.71/x
  3. Step 3: Cross multiply
    619.96x = 930.39 × 533.71
  4. Step 4: Simplify right side
    619.96x = 496,558.45
  5. Step 5: Solve for x
    x = 496,558.45/619.96
  6. Step 6: Final answer
    x = 800.95

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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.