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Finding the Fourth Proportional to 517.95, 776.43 and 193.23

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Solution

The fourth proportional to 517.95, 776.43 and 193.23 is: 289.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.95 : 776.43 = 193.23 : x
  2. Step 2: Convert to fraction form
    517.95/776.43 = 193.23/x
  3. Step 3: Cross multiply
    517.95x = 776.43 × 193.23
  4. Step 4: Simplify right side
    517.95x = 150,029.57
  5. Step 5: Solve for x
    x = 150,029.57/517.95
  6. Step 6: Final answer
    x = 289.66

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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.