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Finding the Fourth Proportional to 636.09, 877.78 and 374.10

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Solution

The fourth proportional to 636.09, 877.78 and 374.10 is: 516.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.09 : 877.78 = 374.10 : x
  2. Step 2: Convert to fraction form
    636.09/877.78 = 374.10/x
  3. Step 3: Cross multiply
    636.09x = 877.78 × 374.10
  4. Step 4: Simplify right side
    636.09x = 328,377.50
  5. Step 5: Solve for x
    x = 328,377.50/636.09
  6. Step 6: Final answer
    x = 516.24

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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.