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Finding the Fourth Proportional to 517.41, 776.13 and 132.66

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Solution

The fourth proportional to 517.41, 776.13 and 132.66 is: 198.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.41 : 776.13 = 132.66 : x
  2. Step 2: Convert to fraction form
    517.41/776.13 = 132.66/x
  3. Step 3: Cross multiply
    517.41x = 776.13 × 132.66
  4. Step 4: Simplify right side
    517.41x = 102,961.41
  5. Step 5: Solve for x
    x = 102,961.41/517.41
  6. Step 6: Final answer
    x = 198.99

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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.