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Finding the Fourth Proportional to 636.04, 877.74 and 400.12

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Solution

The fourth proportional to 636.04, 877.74 and 400.12 is: 552.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.04 : 877.74 = 400.12 : x
  2. Step 2: Convert to fraction form
    636.04/877.74 = 400.12/x
  3. Step 3: Cross multiply
    636.04x = 877.74 × 400.12
  4. Step 4: Simplify right side
    636.04x = 351,201.33
  5. Step 5: Solve for x
    x = 351,201.33/636.04
  6. Step 6: Final answer
    x = 552.17

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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.