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Finding the Fourth Proportional to 517.27, 776.04 and 451.66

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Solution

The fourth proportional to 517.27, 776.04 and 451.66 is: 677.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.27 : 776.04 = 451.66 : x
  2. Step 2: Convert to fraction form
    517.27/776.04 = 451.66/x
  3. Step 3: Cross multiply
    517.27x = 776.04 × 451.66
  4. Step 4: Simplify right side
    517.27x = 350,506.23
  5. Step 5: Solve for x
    x = 350,506.23/517.27
  6. Step 6: Final answer
    x = 677.61

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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.