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Finding the Fourth Proportional to 636.04, 877.26 and 402.76

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Solution

The fourth proportional to 636.04, 877.26 and 402.76 is: 555.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.04 : 877.26 = 402.76 : x
  2. Step 2: Convert to fraction form
    636.04/877.26 = 402.76/x
  3. Step 3: Cross multiply
    636.04x = 877.26 × 402.76
  4. Step 4: Simplify right side
    636.04x = 353,325.24
  5. Step 5: Solve for x
    x = 353,325.24/636.04
  6. Step 6: Final answer
    x = 555.51

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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.