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Finding the Fourth Proportional to 555.27, 766.49 and 375.85

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Solution

The fourth proportional to 555.27, 766.49 and 375.85 is: 518.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    555.27 : 766.49 = 375.85 : x
  2. Step 2: Convert to fraction form
    555.27/766.49 = 375.85/x
  3. Step 3: Cross multiply
    555.27x = 766.49 × 375.85
  4. Step 4: Simplify right side
    555.27x = 288,086.21
  5. Step 5: Solve for x
    x = 288,086.21/555.27
  6. Step 6: Final answer
    x = 518.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.