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Finding the Fourth Proportional to 636.21, 955.13 and 534.15

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Solution

The fourth proportional to 636.21, 955.13 and 534.15 is: 801.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.21 : 955.13 = 534.15 : x
  2. Step 2: Convert to fraction form
    636.21/955.13 = 534.15/x
  3. Step 3: Cross multiply
    636.21x = 955.13 × 534.15
  4. Step 4: Simplify right side
    636.21x = 510,180.02
  5. Step 5: Solve for x
    x = 510,180.02/636.21
  6. Step 6: Final answer
    x = 801.91

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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.